Session Index

Nanophotonic Materials and Devices

Nanophotonic Materials and Devices I
Thursday, Dec. 2, 2021  13:15-15:00
Presider: Prof. Hyeonseok Lee (NSYSU) Prof. Chih-Ming Wang (NCU)
Room: 302a
13:15 - 13:30 Award Candidate (Paper Competition)
Manuscript ID.  0224
Paper No.  2021-THU-S0101-O001
Wei-Ruei Chen Bound states in the continuum with linear and elliptical polarized lasing
Wei-Ruei Chen;Kuo-Ping Chen

Bound states in the continuum could be realized by the metasurface with high Q-factor resonance. It uses a pair of rectangular bars to form two surface lattice resonances with destructive interference, so that Fano resonance occurs. In this study, the symmetry of the structure was broken to produce chirality and maintain the high Q-factor. We also use internal excitation to analyze the localization of the electric field and the polarization of the emission. This result can confirm that the high Q-factor can be maintained regardless of external or internal excitation after the structure symmetry is broken.

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13:30 - 13:45 Award Candidate (Paper Competition)
Manuscript ID.  0239
Paper No.  2021-THU-S0101-O002
Po-Liang Chen Waveguide-Integrated Black Phosphorus Photodetectors in Mid-Infrared range
Po-Liang Chen;Tian-Yun Chang;Jia-Xin Li;Wei-Qing Li;Chang-Hua Liu

Developing high-performing and silicon compatible mid-infrared photodetectors will greatly benefit mid-infrared silicon photonics applications. We proposed a new type of hybrid photodetector, which is composed of black phosphorus / molybdenum ditelluride van der Waals heterostructures integrated with a silicon-on insulator waveguide. Our device could exhibits high responsivity, ultrafast rise and decay time in the mid-infrared spectral range. The results show its great promise for mid-infrared on-chip sensing applications.

13:45 - 14:00 Award Candidate (Paper Competition)
Manuscript ID.  0383
Paper No.  2021-THU-S0101-O003
Siti Sulikhah Modeling and Characterization of Asymmetric Quarter-Wave-Shifted DFB Based Electro-absorption Modulated Lasers for 400-Gb/s and Above Optical Interconnects
Siti Sulikhah;San Liang Lee;Hen Wai Tsao

A newly developed asymmetric quarter-wave-shifted (QWS) DFB based electro-absorption modulator lasers (EMLs) are proposed here to overcome the challenging issues for the former symmetric AR-AR schemes, which suffer from performance degradation due to the external optical feedback and its output efficiency. With HR-AR structure, an asymmetric QWS-EML can maintain a high dynamic single-mode yield of 89.19% and average Q-value of >20.8 even with strong reflection from EAM output facet. Regarding these improvements, we admit that the advanced MQW laser technologies in terms of asymmetric QWS DFB based EMLs can affords the cost-effective solution for the forthcoming 800G or 1.6T Ethernet

14:00 - 14:15 Award Candidate (Paper Competition)
Manuscript ID.  0605
Paper No.  2021-THU-S0101-O004
Li-Ming Chiang Enhanced Photoluminescence of Methylammonium Lead Bromide Perovskite via Silver Film Over Nanospheres
Li-Ming Chiang;Hai-Pang Chiang;Tsung-Sheng Kao

We investigate a tunable plasmonic structure to enhance perovskite material’s fluorescence with nanosphere self-assembly method, magnetic sputter system, thermal evaporation system, and chemical solution method. When perovskite on the structure with no silver particle, its fluorescence enhancement is 2.86 times. When the perovskite on the structure with silver particles, its fluorescence enhancement is 27.41 times, respectively.

14:15 - 14:30 Award Candidate (Paper Competition)
Manuscript ID.  0604
Paper No.  2021-THU-S0101-O005
Tzu-Chun Chien One-bit Transmission Analyzation of asymmetric-arm Silicon Photonic Mach–Zehnder Modulator
Tzu-Chun Chien;Zih-Yuan Ciou;Shih-Chun Kao;Kuo-Fang Chung;Ding-Wei Huang;Gong-Ru Lin

A one-bit transmission and optical output power to DC voltage bias curve (P-V curve) on the asymmetric-arm Mach–Zehnder Modulator (MZM) are demonstrated. The one-bit signal amplitudes are 41.63 µW and 42.81 µW over VDC are 1.1 V and 3.2 V, and P-V curve slopes are roughly 0.218 and 0.444.

14:30 - 14:45 Award Candidate (Paper Competition)
Manuscript ID.  0181
Paper No.  2021-THU-S0101-O006
Chia-Hung Wu Near-field Photodetection in Polarization-Enabled Steering Surface Plasmon Polaritons Waveguides Embedded with Graphene
Chia-Hung Wu;Kuo-Ping Chen

In this research, a polarization actuated graphene photodetector was demonstrated
via surface plasmon polaritons (SPPs) detection. The designed symmetric nano-structure
guides the SPPs to the graphene photodetector due to local carriers heating. The excited hot
carriers were separated and driven via external and internal electric fields, generating a
photocurrent. The micro-scale directional coupler was based on a two-wire transmission line
that supports a symmetric and an antisymmetric modes. This yields unidirectional propagating
surface plasmons tuned by different polarizations of light. The contrast of photocurrent from
different polarizations was 300 %.

14:45 - 15:00 Award Candidate (Paper Competition)
Manuscript ID.  0350
Paper No.  2021-THU-S0101-O007
Yu-Cheng Lin Heterogeneously Integrating Photonic Crystal Lasers on SiNx Waveguide by Transfer Printing
Yu-Cheng Lin;Jing-Ting Wang;Tsan-Wen Lu;Po-Tsung Lee

We integrate 1D photonic crystal nanobeam lasers onto SiNx waveguides by high precision transfer printing technique. With asymmetric PhC lattice and tapered structure design, we realize highly efficient light coupling in this heterogeneous integration and investigate the integration misalignment tolerance for the light coupling.


Nanophotonic Materials and Devices

Nanophotonic Materials and Devices II
Thursday, Dec. 2, 2021  15:15-17:00
Presider: Prof. Hsu-Cheng Hsu (NCKU) Prof. Yen-Sheng Lin (I-Shou)
Room: 302a
15:15 - 15:30 Award Candidate (Paper Competition)
Manuscript ID.  0036
Paper No.  2021-THU-S0102-O001
Jun-Wei Liao Gate Voltage Modulated Plasmonic Nanolasers on the Graphene-insulator-metal Platform
Jun-Wei Liao

We experimentally demonstrate the voltage modulation of plasmonic nanolasers on graphene-insulator-metal (GIM) platform at room temperature. The threshold and peak position of lasing peak could be tuned by gate voltage. The diminishing of lasing intensity, and the wavelength shifts of peak positions were observed when the applied voltage was changed.

15:30 - 15:45 Award Candidate (Paper Competition)
Manuscript ID.  0189
Paper No.  2021-THU-S0102-O002
Luthviyah Choirotul Muhimmah The Observation of Two-Color Emission in Layered Dual-Phase Gallium Telluride
Luthviyah Choirotul Muhimmah;Ching-Hwa Ho

Dual-phase two-color emissions of multilayered GaTe positioned at 1.588 and 1.652 eV are simultaneously detected by micro-photoluminescence measurement at 300 K. The lower-energy peak may originate from the hexagonal GaTe (H-GaTe) phase while the higher-energy luminescence might come from monoclinic GaTe (M-GaTe) phase and which are verified by micro-thermoreflectance and HRTEM. TRPL and AFLM of the multilayer GaTe indicated that the averaged decay lifetime of the H-GaTe is larger than that of the M-GaTe. Polarized micro-Raman and polarized micro-PL measurements shows that M-GaTe has higher extinction ratio and lower symmetry than that H-GaTe.

15:45 - 16:00 Award Candidate (Paper Competition)
Manuscript ID.  0073
Paper No.  2021-THU-S0102-O003
Zhong-Wen Yang Metasurface-Integrated Photonic-Crystal Surface-Emitting Lasers with Variable Emission Angles
Zhong-Wen Yang

Metasurfaces have attracted great interest because of their ability to control the amplitude, phase, and polarization of electromagnetic waves. In this study, we first demonstrate emission angle covering ±20° × ±20° from a metasurface-integrated PCSELs array with a very compact size.

16:00 - 16:15 Award Candidate (Paper Competition)
Manuscript ID.  0431
Paper No.  2021-THU-S0102-O004
Chi-Tang Huang Electrically tunable phase gratings using uniform lying helix structures of cholesteric liquid crystals
Chi-Tang Huang;Yu-Tse Wang;Xiang-You Ji;Ko-Ting Cheng

In this study, the proposed phase gratings are fabricated by the uniform lying helix (ULH) textures of cholesteric liquid crystals (CLCs). With the characteristics of LCs, an electrically tunable phase grating is realizable under ULH textures. Besides, the effect of the LC dimer, CB7CB, to ULH textures is investigated.

16:15 - 16:30 Award Candidate (Paper Competition)
Manuscript ID.  0147
Paper No.  2021-THU-S0102-O005
Chao-Hsu Lin High-contrast Grating (HCG) Process Applied to Micro-LED and Polarization Simulation ratio Optimization
Chao-Hsu Lin;Yen-Shou Lin;Chun-You Fan;Hao-Chung Kuo;Tsung-Sheng Kao

In this study, we demonstrate the High-Contrast Grating(HCG) that fabricated on the semipolar substrate with aluminum deposition shown better polarization control ability and achieved degree of polarization(DOP) value to 0.75. Compare to the p-type gallium grating and nonstructural devices, the grating with aluminum deposition shows the best performance of measurement and simulation.

16:30 - 16:45 Award Candidate (Paper Competition)
Manuscript ID.  0601
Paper No.  2021-THU-S0102-O006
Wei-Xiang Hong Dual-wavelength guided mode resonance filter
Wei-Xiang Hong;Yung-Jr Hung

We demonstrate a dual-wavelength guided mode resonance (GMR) filter based a holographic-defined moiré waveguide grating structure. As-realized GMR filter exhibits two resonant wavelengths (561 and 632 nm) for TE-polarized light.

16:45 - 17:00 Award Candidate (Paper Competition)
Manuscript ID.  0186
Paper No.  2021-THU-S0102-O007
Jhuang-Hao Cyue Localized Phase Modulation in Vanadium Dioxide with Joule Heating Driven Memristive Switching
Jhuang-Hao Cyue;Kuo-Ping Chen

Vanadium dioxide (VO2) is one of promising Phase change materials (PCMs) presenting the insulator-metal transition (IMT) with strong contrast in physical properties, low critical temperature, ultra-fast transition and continuously tunable characteristic. In our work, we apply VO2 onto ITO glass as a memory layer so as to develop a novel approach to quantify the correlation between IMT behavior and the geometry-dependent Joule-heating effect. The demonstration of two-terminals memory device provides a new way for nanophotonics and advanced optoelectronics device. Notably, this approach also reveals the significance of thermal engineering for efficiently obtaining phase transition of VO2.

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Nanophotonic Materials and Devices

Nanophotonic Materials and Devices III
Friday, Dec. 3, 2021  10:45-12:00
Presider: Prof. Yu-Hsun Chou(NCKU) Prof. Tong-Wun Wang(FCU)
Room: 302a
10:45 - 11:00
Manuscript ID.  0173
Paper No.  2021-FRI-S0103-O001
Jyun-Jhang He Active Control of Photonic Crystals
Jyun-Jhang He;Shawn-Yu Lin;Jhih-Sheng Wu

In this paper, we study active control of photonic crystals. And we consider photonic crystals of finite thicknesses which is made of infinitely long and periodical dielectric cylinders. Such systems host waveguide modes whose photonic band structures are determined by dielectric geometries. And the optical properties reflect their photonic band structures. Therefore, we investigate how gain and loss affect reflection and transmission. Then we find that, after adding the lossy material, the optical properties of the photonic crystals have the lower peaks on transmission and the crossing of transmission and reflection have a red shift.

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11:00 - 11:15
Manuscript ID.  0263
Paper No.  2021-FRI-S0103-O002
Yen-Shou Lin Manipulation of Optical Properties by Integrating Two-Dimensional Tungsten Diselenide (WSe2) with One-Dimensional Photonic Crystals
Yen-Shou Lin;Hao-Hsuan Ciou;Ya-Hui Chang;Konthoujam James Singh;Hsiang-Ting Lin;Hao-Chung Kuo;Min-Hsiung Shih

In this study, we integrated monolayer tungsten diselenide (WSe2) on a flexible substrate with the one-dimensional (1-D) silicon nitride (SiNx) photonic crystal (PhC) structure, and analyze optical characteristics of the device.

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11:15 - 11:30
Manuscript ID.  0438
Paper No.  2021-FRI-S0103-O003
Yan-Song Zhang Flexible Liquid Crystal Composite Laser with Light Controllability of Emission Direction
Yan-Song Zhang;Zhi-Wei Lin;Chia-Rong Lee

Here, a self-steering lasing emission from a defect-mode sandwich-like resonator consisting of photomechanical deformable azobenzene cholesteric liquid crystal elastomer is demonstrated. The output lasing emission can be fast steered by UV irradiation within a wide angular tuning range of approximately ± 57°.

11:30 - 11:45
Manuscript ID.  0608
Paper No.  2021-FRI-S0103-O004
Tsung Sheng Kao Monte Carlo simulation of incoherent random lasing in the dye solution with dielectric scatterers
Jian Xuan Liu;Tsung Sheng Kao

In this paper, we investigate the spectral characteristics of random lasing behaviors via the Monte Carlo simulation in a system of dye solution with dielectric scatterers. The calculation model not only shows the correspondence to the experimental measurements, but also suggests that lasing threshold is highly dependent with the pumping spot size and scattering mean-free path in disordered medium. Furthermore, we simulate the effect of single-particle Mie resonance on emission spectrum, discussing the wavelength tunability of random laser.

11:45 - 12:00
Manuscript ID.  0713
Paper No.  2021-FRI-S0103-O005
Ming Lun Tseng Versatile Wafer-Scale Nanofabrication of Functional Metasurfaces
Ming Lun Tseng;Aleksandrs Leitis;Aurelian John-Herpin;Yuri S. Kivshar;Hatice Altug

We demonstrate an industry-compatible method to fabricate wafer-scale metasurfaces on freestanding membranes. The method is based on deep-UV lithography and capable of producing both of plasmonic and dielectric metasurfaces for various functionalities. The reported metasurfaces show ideal operation efficiencies for high-quality-factor resonances, light focusing and polarization control, and biosensing.

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Nanophotonic Materials and Devices

Nanophotonic Materials and Devices IV
Friday, Dec. 3, 2021  13:00-14:30
Presider: Prof. Po-Tsung Lee (NCTU) Prof. Kuo-Ping Chen (HCTU)
Room: 302a
13:00 - 13:30
Manuscript ID.  0719
Paper No.  2021-FRI-S0104-I001
Invited Speaker:
Kuo-Ping Chen
Bound State in the Continuum with Dielectric Metasurfaces and Tamm Plasmonics Polaritons
Kuo-Ping Chen

13:30 - 13:45
Manuscript ID.  0182
Paper No.  2021-FRI-S0104-O001
Pei-Yuan Wu Plasmonic transmission-line-based half-adder and half-subtractor
Pei-Yuan Wu;Yun-Chorng Chang;Chen-Bin Huang

We experimentally demonstrate basic Boolean operations and conventionally required serial gate operation can be converted to pure parallel operation in a combinational circuit. Two particular arithmetic circuits, a half-adder and a half-subtractor, are designed and realized.

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13:45 - 14:00
Manuscript ID.  0220
Paper No.  2021-FRI-S0104-O002
MING-JYUN YE Infrared Absorption Modulation with Germanium nanohole Metasurfaces

In this research, the largest absorption ~90% at the communication wavelength (λ = 1547 nm) was demonstrated by germanium nanohole metasurface with subwavelength thickness (~ 310 nm). By tuning the different hole depth in Ge metasurface arrays, we also can get the tunable Q-factors from 70 to 126.

14:00 - 14:15
Manuscript ID.  0318
Paper No.  2021-FRI-S0104-O003
Hsieh Yueh Ting Phase Conjucation Metasurface For Under Display Sensing
Hsieh Yueh Ting

It is known that the wavefront will be disturbed through a display panel. A phase conjugation metasurface is proposed to eliminate the disturbance arising from the periodicity of a panel. The corresponding under-display wavefront error can be significantly reduced via the wavefront optimization method.

14:15 - 14:30
Manuscript ID.  0565
Paper No.  2021-FRI-S0104-O004
Samuel Husin Surya Mandala Design of a high figure-of-merit plasmonic sensor based on an aluminum/silver/gold multilayer sensing structure
Samuel Husin Surya Mandala;Mochamad Januar;Michael Grady;Kou-Chen Liu

In this study, we designed a sensor chip-based on Al films as an adhesive layer and Ag/Au films as a sensing layer for surface plasmon resonance (SPR) sensor and demonstrated that the structure shows a better performance until 1.8-fold higher figure of merit than conventional SPR chip based on Cr/Au films.


Nanophotonic Materials and Devices

Poster Session I
Friday, Dec. 3, 2021  14:00-16:00
Room: Corridor
Award Candidate (Paper Competition)
Manuscript ID.  0143
Paper No.  2021-FRI-P0101-P001
Kuntal Barman Temperature based voltage controlled Localized Surface Plasmon Resonance
Kuntal Barman;Syu-Cing Ma;Yu-Hsiang Chang;Jian-Jung Huang

A change in density due to increase in temperature is one of the basic characteristics of a material and change in density can also leads to change in the refractive indices. This phenomena can be used in a controlled way to fine tune Localized Surface plasmon resonance(LSPR). In our work we fabricate an on-chip microheater where the temperature depends on the input voltage. In this work the LSPR is fine tuned indirectly by applied voltage with changing surface temperature. The outcomes of this experiment are also verify and reconfirmed by heating the substrate externally.

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Award Candidate (Paper Competition)
Manuscript ID.  0145
Paper No.  2021-FRI-P0101-P002
Wei Cheng Hsiao Broadband Reflection in Polymer-Stabilized Cholesteric Liquid Crystals
Wei Cheng Hsiao;Chun Ta Wang

We reported a broadband reflector based on polymer-stabilized cholesteric liquid crystals whose bandwidth is broadened by applying the direct current (DC) bias and then photo-polymerizing. The reflection band can be further extended toward the longer wavelengths by applying the DC voltages.

Award Candidate (Paper Competition)
Manuscript ID.  0187
Paper No.  2021-FRI-P0101-P003
Sheng-I Kuo Tunable Scan Lens Based on Optical Phased Array
Sheng-I Kuo;Ju-Wei Wang;Zohauddin Ahmad;Jin-Wei Shi;You-Chia Chang

We demonstrate a tunable scan lens based on a 30-element optical phased array on the InP integrated photonic platform. We develop a phase calibration procedure based on the genetic algorithm, which optimizes the driving signals of the optical phased array to form focused spots. We show dynamic scanning of the focused spot, including changing the focal length to 100 μm and 75 μm, as well as introducing different lateral offsets. The minimum measured spot size is 2.72 μm, which matches well with the simulation.

Award Candidate (Paper Competition)
Manuscript ID.  0203
Paper No.  2021-FRI-P0101-P004
chen yuh ming Calculation of Plasmonic Bands of Square Lattice
chen yuh ming;Wu Jhih-Sheng

We calculate the optical characteristics such as band structures and transmission and
reflection of plasmonic crystals with square lattices by using the finite difference time domain
method. The time-domain method provides a stable calculation of band structures for lossy
materials such as metals. We applied random source excitation to find all the possible modes.
Such an approach is advantageous in finding localized modes. We obtain the band structures of
the plasmonic crystals and the reflectance and transmittance of the plasmonic crystals both in the
TE and TM cases.

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Award Candidate (Paper Competition)
Manuscript ID.  0247
Paper No.  2021-FRI-P0101-P005
Yu-Ching Chang Lead-Free Cesium Tin Halide Double-Perovskite Nanocrystals for Candlelight Light-Emitting Diodes
Yu-Ching Chang;Yu-Chien Tien;Chun-Feng Lai

Lead-free cesium tin halide (Cs2SnBr6) double-perovskite nanocrystals (DPNCs)
having cubic symmetry were synthesized and investigated. The prepared DPNCs and blue
phosphor were mixed with polydimethylsiloxane packaging in 365 nm UV light emitting
diodes (LEDs), which were used to fabricate environmentally friendly candlelight LEDs.

Award Candidate (Paper Competition)
Manuscript ID.  0276
Paper No.  2021-FRI-P0101-P006
Chao-Chieh Cheng Circular Dichroism Enhancement of InGaAsP Microdisk Laser with a Photonic Crystal Feedback Waveguide
Chao-Chieh Cheng;Tzu-Wei Huang;Wei-Ting Wang;Pi-Ju Cheng;Shu-Wei Chang;Min-Hsiung Shih

We fabricated a InGaAsP microdisk cavity with a photonic crystal feedback waveguide nearby and further investigated the lasing characteristic between it and a microdisk laser. The enhancement in the circular polarization degree of laser emission is achieved by integrating the microdisk laser with the waveguide.

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Award Candidate (Paper Competition)
Manuscript ID.  0305
Paper No.  2021-FRI-P0101-P007
Liang-Ying Wu Verification of Transverse Band Gap in Three Dimensional Liquid Photonic Crystals
Liang-Ying Wu

We measure the transverse band gap of blue phase liquid crystal(BPLCs) by observing the reflection spectrums of BPLCs through the fiber-assisting measurement system. By analysing the change of spectrum caused by temperature or electric field, we can verify the photonic band gap(PBG) model of BPLCs

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Award Candidate (Paper Competition)
Manuscript ID.  0371
Paper No.  2021-FRI-P0101-P008
Chen-Han Lu High-Efficiency Red Electroluminescence Based on Earth-abundant Cu(I) Complex
Chen-Han Lu;Yu-Hsin Huang;Wei-Kai Lee;Ao Ying;Chuluo Yang;Shaolong Gong;Chung-Chih Wu

How to develop efficient red-emitting organometallics of earth-abundant copper(I) is a formidable challenge in the field of organic light-emitting diodes (OLEDs). Here, a red Cu(I) complex, MAC*-Cu-DPAC, was developed in a carbene-metal-amide motif, achieving satisfactory red emission, a high photoluminescence quantum yield of up to 70%, a high horizontal dipole ratio of 77%, and a sub-microsecond lifetime. The resulting OLEDs delivered high external quantum efficiencies of 21.1% at a maximum and 20.1% at 1000 nits, together with a red emission peak at ∼630 nm. These values represent the state-of-the-art performance for red-emitting OLEDs based on coinage metal complexes.

Award Candidate (Paper Competition)
Manuscript ID.  0520
Paper No.  2021-FRI-P0101-P009
Guang-Ming Lin Attachable 1D Photonic Crystal Laser Thin-Film for Bending and Pressing Sensors
Guang-Ming Lin;Zhen-Yu Wang;Tsan-Wen Lu;Po-Tsung Lee

We demonstrate 1D photonic crystal (PhC) lasers embedded in a polymeric thin film, which can attach to any object's surface. Owing to this feature and the nanoclamp design with strain shaping, the PhC laser inside shows significant wavelength responses to the applied bending and pressing in experiments.

Award Candidate (Paper Competition)
Manuscript ID.  0561
Paper No.  2021-FRI-P0101-P010
Jun-Quan Chen Subwavelength Focusing Using Spiral Plasmonic Lens with Grooves of Variant Widths
Jun-Quan Chen;Fitri Oktafiani;Po-Tsung Lee

We propose a novel Archimedean spiral plasmonic lens (ASPL) consisting of a spiral slit and multiple circular grooves for far-field focusing. The simulation results show the focusing properties can be modulated by different arrangements of the groove widths. The ASPL with decreased groove width design exhibits the largest focal length of 1.26λ, the strongest focusing intensity, and subwavelength resolution of 0.42λ.

Award Candidate (Paper Competition)
Manuscript ID.  0641
Paper No.  2021-FRI-P0101-P011
Bei Liu Gold plasmonic nanostructures for deep-red emission enhancement: nanosphere vs nanodisk
Bei Liu;Mochamad Januar;Kou-Chen Liu

We carried out a comparative study to evaluate the feasibility of gold nanosphere and nanodisk to enhance the deep-red emitter emission. As a result, gold nanospheres and nanodisks with diameters greater than 50 and 60 nm are suitable for increasing the deep-red emitter quantum yield, respectively. Interestingly, nanodisks show greater radiative enhancement than nanospheres.

Award Candidate (Paper Competition) Award Candidate (Applied Optoelectronics Competition)
Manuscript ID.  0578
Paper No.  2021-FRI-P0101-P012
Ying-Yu Wang Synthesis of Ag/Au/AgCl nanostructures by ferroelectric templates for surface-enhanced Raman scattering
Ying-Yu Wang;An-Ting Lee;Hsin-An Chi;Tzyy-Jiann Wang

Hybrid Ag/Au/AgCl nanomaterials are successfully synthesized by photoreduction using the ferroelectric template. The Raman signals are effectively enhanced by electromagnetic and chemical mechanisms. The superior performance includes the limit of detection as low as 1.57×10^-9 M and the ultra-high enhancement factor of 6.92×10^9.

Award Candidate (Paper Competition) Award Candidate (Applied Optoelectronics Competition)
Manuscript ID.  0603
Paper No.  2021-FRI-P0101-P013
Wei-Chen Tsai DFB laser from dye covered silk fibroin grating replica
Wei-Chen Tsai;Ja-Hon Lin;Po-Han Tung;Wei-Cheng Chen;Chi-Ching Kuo

We produce the distributed feedback (DFB) laser from dye covered biopolymer with one dimensional grating. Through the pump of Q-switched laser, the emission peak and FWHM of DFB laser are 583.2nm and 0.30 nm . After embedding of silver nanoprisms The blue shift of emission peak and narrowing of linewidth have been produced.

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Award Candidate (Applied Optoelectronics Competition)
Manuscript ID.  0032
Paper No.  2021-FRI-P0101-P014
Hsu Wei-Ting Two-photon polymerization technology for the fabrication of Micro/Nano structures
Hsu Wei-Ting;Yu Min-Jhe;Cheng Yu-Chieh

With the advent of two-photon polymerization, a direct laser writing is unique, flexible, and cost-effective fabrication technique for three-dimensional structure. In this paper, we have demonstrated the customized structures, such as grating、microfluidic and spiral suspension structures for many applications in the diversified scientific and industrial fields.

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Award Candidate (Applied Optoelectronics Competition)
Manuscript ID.  0389
Paper No.  2021-FRI-P0101-P015
Nazar Riswana Barveen Construction of Flexible Plasmonic Ag-NPs/PMMA Substrates Using Chemically Patterned Ferroelectric Crystals for Detection of Parathion
Nazar Riswana Barveen;Tzyy-Jiann Wang;Zhe-Yuan Liu

The plasmonic Ag nanoparticles are photoreduced using ferroelectric templates and effectively transferred to the PMMA film by a peel-off process for the parathion detection on curved surfaces. The produced flexible SERS substrate owns intensive hotspots with ultra-low limit of detection 1.76×10^-9 M and high enhancement factor 3.25×10^8.

Award Candidate (Applied Optoelectronics Competition)
Manuscript ID.  0258
Paper No.  2021-FRI-P0101-P016
W. F. Wang The Study of Ga2O3 Metal-Semiconductor-Metal Photodetector by RF Magnetron Sputter and Hydride Vapor Phase Epitaxy
W. F. Wang;C. K. Wang;Y. Z. Chiou;J. S. Jheng;Z. Y. Huang

In this study, the Ga2O3 thin films were grown on sapphire substrate by RF magnetron sputtering and hydride vapor phase epitaxy technique. Then, the metal-semiconductor-metal (MSM) photodetectors were fabricated and the optoelectronic properties were studied. The Ga2O3 photodetector using hydride vapor phase epitaxy technique exhibits lower dark current and better photo responsivity.

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Manuscript ID.  0320
Paper No.  2021-FRI-P0101-P017
Hsu Wei Chun Low loss hybrid plasmonic waveguide at the near-Infrared wavelength
Hsu Wei Chun

In this research, we demonstrate hybrid plasmonic waveguide (HPWG) have lower propagation losses and higher effective refractive index than the metal-insulator-metal (MIM) plasmonic waveguide, but still provide high confinement characteristic.


Nanophotonic Materials and Devices

Nanophotonic Materials and Devices V
Saturday, Dec. 4, 2021  09:00-10:30
Presider: Prof. Shih-Hsiang Hsu (NTUST)
Room: 302a
09:00 - 09:15
Manuscript ID.  0206
Paper No.  2021-SAT-S0105-O001
THALITA MAYSHA HERNINDA Optical and Electrical Properties of Selenium-Doped Zirconium Dichalcogenides ZrS2−xSex (x = 0, 1, 2) Grown by Chemical Vapor Transport

The structure optical and electrical properties of ZrS2-xSex single crystal with composition x=0, 1, and 2 were grown by CVT method with Iodine as the transport agent. The HRTEM and XRD revealed that ZrS2-xSex were crystallized in 1T structure with lattice constant increase as the doping increased. The energy-gap of ZrS2-xSex were shifted to lower energy as doping increased. Two Raman vibrational modes were detected at 300K. Resistivity and Hall-effect measurement indicated that the series are N-type semiconductors. Thermoelectric of ZrS2-xSex was investigated from 25 to 300K. At 300K, ZrSe2 demonstrates the highest ZT value of 0.08 among the series.

09:15 - 09:30
Manuscript ID.  0237
Paper No.  2021-SAT-S0105-O002
Jia-Xin Li Fe3GeTe2-based Magnetic Van der Waals heterostructures for Valleytronics applications
Jia-Xin Li;Wei-Qing Li;Po-Liang Chen;Tian-Yun Chang;Chang-Hua Liu

Having the capability of manipulating the valley degree of freedom is essential for the future valleytronics applications, and such devices could provide a new way of data encoding and information processing. We developed the novel van der Waals heterostructures that incorporate a Fe3GeTe2 ferromagnetic tunneling contact. The contact can inject spin-polarized carriers and consequently lead to valley polarization of transition metal dichalcogenides (TMDs), as confirmed by our helicity-dependent electroluminescence measurements. Our results show the possibility of electrically manipulating the valley degree of freedom of TMDs.

09:30 - 09:45
Manuscript ID.  0257
Paper No.  2021-SAT-S0105-O003
Po-Sheng Huang Optimal polarization conversion using a toroidal-Fano-resonant metasurface
Po-Sheng Huang;Amir Hassanfiroozi;Pin Chieh Wu

In this work, we experimentally demonstrate an array of single-layer plasmonic metasurface with a linear cross-polarization conversion efficiency reaching ~22.9%, which is comparable to the theoretical limit. The high polarization conversion efficiency arises from the Fano-like coupling of toroidal dipole and quadrupole resonances.

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09:45 - 10:00
Manuscript ID.  0313
Paper No.  2021-SAT-S0105-O004
Sheng-Jie Shen Chip-Level Meta-Corrector for Cooke Triplet
Sheng-Jie Shen;Chih-Ming Wang

A chip-level meta-corrector stacked on CMOS image sensor is proposed to improve the optical performance of a Cooke triplet. It is theoretically demonstrated that the spot size of a Cooke triplet consisting of three pieces of spherical lenses can be significantly reduced from 43 um to 0.565 um

10:00 - 10:15
Manuscript ID.  0464
Paper No.  2021-SAT-S0105-O005
Zhi-Qun Wang Ultra-broadband Tunable and Chirality Invertible Bragg-Berry Optical Vortex Generators Based on Molecular-Motor-Doped Cholesteric Liquid Crystals
Zhi-Qun Wang;Chia-Rong Lee

We demonstrates an advanced planar phase modulator called Bragg-Berry optical vortex generator (BBOVG) based on molecular-motor-doped cholesteric liquid crystals. The BBOVG can generate reflected vortex beams with a wavelength tunable in an ultra-broadband photonic bandgap (PBG) and a sign invertibility of orbital angular momentum, by controlling the pitch and the topological charge of the BBOVG under the UV illumination and applied voltage.

10:15 - 10:30
Manuscript ID.  0563
Paper No.  2021-SAT-S0105-O006
Mochamad Januar Unraveling the ultranarrow ultraviolet plasmonic on the array of Al nanodisk through the modification of the nanodisk base angle and the embedded substrate
Mochamad Januar;Bei Liu;Kou-Chen Liu

This work investigates the correlation between substrate and base angle effects on arrays of Al nanodisks, which unveils a dipolar plasmonic shift and the emergence of two other plasmon modes with ultranarrow bandwidths at shorter wavelengths. The narrow-bandwidth resonance facilitates high Q-factor resonators and a more diffuse electric field, potentially increasing signal resolution in sensing applications and enhancing plasmon-exciton coupling over a wider area in solid-state lighting devices.


Nanophotonic Materials and Devices

Poster Session II
Saturday, Dec. 4, 2021  09:30-11:30
Room: Corridor

Manuscript ID.  0054
Paper No.  2021-SAT-P0102-P001
Chia-Ho Wang Effect of Carbon Quantum Dots Coating on the Luminescence Properties of CaAl2O4:Eu2+ Phosphor
Yi-Yan Tsai;Chia-Ho Wang;Su-Hua Yang

Phosphor CaAl2O4:Eu2+ coated with carbon quantum dots (CQDs) was synthesized. CQDs were uniformly distributed on the phosphor. CaAl2O4:Eu2+ excited at 335 nm showed blue emission with a peak at 437 nm. Photoluminescence was decreased when CQDs was coated. The effect of CQDs coating on the luminescence of phosphor was investigated.


Manuscript ID.  0087
Paper No.  2021-SAT-P0102-P002
Jia-Teng Huang Employing Interface treatment to improve all-solution-process perovskite light emitting diode
Yi-Ting Tsai;Jia-Teng Huang;Jiun-Yi Lien;Hai-Ching Su;Zu-Po Yang

All-solution-process has advantages of convenience and low cost for perovskite light emitting diodes. However, either surface morphology or pre-coated perovskite nanocrystals will be damaged when a layer is spin coated on its top. Here, we proposed an interface treatment that can preserve the integrity of the pre-coated perovskite films.


Manuscript ID.  0130
Paper No.  2021-SAT-P0102-P003
Chen-Chin Lee Optical and electrical properties of hydrogenated TiO2 nanotube photocatalysts for CO2 conversion application
Chen-Chin Lee;Hyeonseok Lee

Innate wide bandgap and poor electrical properties of conventional TiO2 photocatalysts limits their application to light-driven CO2 conversion. In this work, we demonstrate and characterize engineered electrical and optical properties of the TiO2 by electrochemical hydrogenation process for the performance improvement of photocatalytic CO2 conversion.


Manuscript ID.  0152
Paper No.  2021-SAT-P0102-P004
tzu-chun Liao Investigations of optical properties of twisted bilayer graphene via reflectance confocal laser microscopy
tzu-chun Liao;Tzu-I Tsai Tsai;Ming-Che Chan;Wei-Shiuan Tseng

A home-made reflectance confocal laser microscopy (RCLM) was used to observe the stacking angles in bilayer graphene system. Data points from images acquired by the RCLM were then analyzed using imagej to investigate the relationship between rotational angles and the light transmittance;
The above-mentioned microscopes are non-contact types, which present high scanning speed, do not need extra sample preparations, and can avoid damages on sample surfaces. These optical approaches are used in this study to observe changes in bilayer graphene,providing convenient and time-saving techniques for future graphene applications and tests.

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Manuscript ID.  0188
Paper No.  2021-SAT-P0102-P005
Yu-Chuan Lin Slow-light effect in one-dimensional topological photonic crystals
Yu-Chuan Lin;Jo-Lun Chiu;Wen-Jeng Hsueh

Slow-light has attracted more attention due to its high potential applications for optical communications and nonlinear optics. Theoretical investigations of slow-light effect in one-dimensional topological photonic crystals are presented. The study results show that ultra-slow-light of 1.05 m/s group velocity is obtained by this approach.

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Manuscript ID.  0205
Paper No.  2021-SAT-P0102-P006
Ho-Sheng Lin Plasmon Vortex generation based on multiple-opening spiral slit
Ho-Sheng Lin;Yung-Chiang Lan;Po-Kai Chang

In recent years, the development of Optical Vortex has also become a popular research objective, in which the PLASMON VORTEX generated by slits generated by different openings will provide a way to control different structures and obtain Orbital Angular Momentun,and thus observe the strength field and phase distribution. In this simulation, we will first observe the intensity field and phase distribution from a single open slit to the plurality of openings. Second, the slits of different openings are also observe the strength field map and phase distribution. At last, there is a summary about different slit structures for different fields.

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Manuscript ID.  0216
Paper No.  2021-SAT-P0102-P007
Cheng-Han Huang Photoluminescence Enhanced by Defect Modes in Symmetric Sandwich-Type Double DBRs Structure
Cheng-Han Huang;Kuo-Ping Chen

In this study, we propose defect modes produced by two identical distributed Bragg reflectors, which is a one-dimensional symmetric photonic structure with dye-doped liquid crystal in the middle of the sandwich-type cell as a defect layer. The excited emission from the lasing dye will enhance due to the defect modes.

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Manuscript ID.  0218
Paper No.  2021-SAT-P0102-P008
Hsu Wei-Chun Low loss hybrid plasmonic waveguide on the near-Infrared wavelength
Hsu Wei-Chun

In this research, we demonstrate hybrid plasmonic waveguide (HPWG) have lower propagation losses and higher effective refractive index than the Metal-Insulator-Metal (MIM), but still provide high confinement characteristic.


Manuscript ID.  0274
Paper No.  2021-SAT-P0102-P009
Chen-Hsuan Kuan Stability and Device Evaluation of Red Cesium Lead Bromoiodide Nanocrystals Chelating Phenylated Phosphine Ligands
Kuan-Hsueh Peng;Chen-Hsuan Kuan;Sheng-Hsiung Yang

Two phosphine ligands diphenylmethylphosphine (DPMP) and triphenylphosphine (TPP) were introduced onto cesium lead bromoiodide nanocrystals (CsPbBrI2 NCs) to improve air stability in the ambient atmosphere. The DPMP and TPP-treated CsPbBrI2 NCs were successfully utilized as the red emitter for fabricating perovskite light emitting diodes with enhanced performance and prolonged device lifetime relative to the pristine one. The improved device performance was attributed to surface passivation of perovskite nanocrystals by DPMP or TPP ligands, which reduces non-radiative recombination at the trap sites.

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Manuscript ID.  0315
Paper No.  2021-SAT-P0102-P010
Lai Fang-I Effect of growth time on properties of ZnO nanorods and performance of perovskite solar cells
Lin Wei-Jhe;Lai Fang-I;Yang Jui-Fu;Kuo Shou-Yi

The photovoltaic performances of ZnO-based perovskite solar cells were studied using ZnO nanorods which were prepared via aqueous solution method at different growth time. These samples were characterized by FE-SEM, UV-Vis-NIR, solar simulator measurements and IPCE measurement to confirm the structural and optical properties by the different nanorod growth time.


Manuscript ID.  0361
Paper No.  2021-SAT-P0102-P011
Chung-Ting Chou Chao Enhanced Coupling Effect and Gap Plasmon Resonance in a MIM-cavity based Sensing Structure
Yuan-Fong Chou Chau;Tan Yu Ming;Chung-Ting Chou Chao;Roshan Thotagamuge;Muhammad Raziq Rahimi Kooh;Hung Ji Huang;Chee Ming Lim;Hai-Pang Chiang

We design a high sensitive multi-mode plasmonic sensor based on the square ring-shaped resonators containing silver nanorods together with a metal-insulator-metal bus waveguide. The suggested structure obtained by the finite element method showed sensitivity and figure of merit and quality factor of about 2473 nm/RIU, 34.18 1/RIU, and 56.35, respectively.

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Manuscript ID.  0388
Paper No.  2021-SAT-P0102-P012
Elumalai Ashok Kumar Synthesis of ZnO Multipods Decorated with Ag Nanospheres for SERS Detection of Nitrophenol
Elumalai Ashok Kumar;Yu-Hsu Chang;Tzyy-Jiann Wang

The SERS substrate based on ZnO multipods decorated with Ag nanospheres is produced by chemical synthesis and offers high enhancement of Raman signal by electromagnetic effect and charge transfer. The achieved SERS performance for nitrophenol detection includes ultra-low limit of detection of 1.49×10^-13 M and superior enhancement factor of 4.27×10^10.


Manuscript ID.  0398
Paper No.  2021-SAT-P0102-P013
Fang-Hsing Wang Fabrication and Characterization of Wide-bandgap ZnSe Thin Film Prepared by Chemical Bath Deposition
Fang-Hsing Wang;Yi-Min Rao;Wun-Yan Chen;Ming-Chien Wu;Han-Wen Liu

Wide-bandgap semiconductors have attracted much attention in optoelectronics. This work prepared chlorine doped ZnSe thin films by chemical bath deposition. The film shows a high absorption in the blue wavelength region. The I-V measurement shows the Al-ZnSe-Al MSM device has a maximum photo responsivity of 0.486 μA/W at the wavelength of 446 nm.


Manuscript ID.  0481
Paper No.  2021-SAT-P0102-P014
Ya-Fen Wu Characterization Of Organic-Inorganic Perovskite Thin Films
Jing-Wun Syu;Jyun-Peng Jhou;Ya-Fen Wu

We carried out temperature-dependent photoluminescence (PL) measurements under different incident-powers to examine the optical properties of perovskite thin films. The electron-phonon renormalization, thermal expansion, and the state-filling effect are discussed.


Manuscript ID.  0517
Paper No.  2021-SAT-P0102-P015
Wen-Yan Lu Performance Characterization of a High-Sensitivity SPAD Chip Operation at Room Temperature
Wen-Yan Lu;Wen-Jeng Ho;Jheng-Jie Liu;Chia-Chun Yu;Yen-Chu Li

We fabricated and characterized a high-sensitivity InP/InGaAs planar single-photon avalanche photodiode (SPAD) with single floating guard-ring and double-diffusion processing. At room temperature, the performance of proposed SPAD chip exhibited as following: dark current of 1.3 nA at 0.9 Vbr, gain of > 10000 at -60 dBm, and linear dynamic range of 55 dB (-60 dBm~-5 dBm). The good linear-mode characteristics of APD chip will be conducive to good working in Geiger-mode single-photon detection performance.

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Manuscript ID.  0593
Paper No.  2021-SAT-P0102-P016
Yue-Gang Wu Influence of photoalignment on the memory state of nematic-silica-dye suspension
Hui-Chi Lin;Yu-Sung Liu Liu;Kuan-Chi Wu;Yue-Gang Wu;Chen-Yu Tai;Hsu-Chih Cheng Cheng

The influence of the photoalignment on the memory state of nematic-silica-dye suspension was studied. When the photoalignment was executed, the adsorbed azo dyes screened the vertical-alignment effect that was supported by silica networks. The hybrid orientation was stabilized because the azo dyes on the substrate provided a stronger surface alignment.

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Manuscript ID.  0597
Paper No.  2021-SAT-P0102-P017
Shi-Jane Tsai Coherently Strained GaAsBi Alloys to GaAs Grown by MBE
Shi-Jane Tsai;Guan-Lun Peng;Hao-Hsiung Lin

We report on the growth of low droplets, highly mismatched GaAsBi alloys on GaAs by MBE. GaAsBi is coherently strained to GaAs and reveals a Bi mole fraction of 4.2 % from RSM result. GaAsBi shows three kinds of Bi compositional depth profile with various Bi/Ga atomic flux ratio. The incorporation of Bi results in a bandgap reduction of 0.3 eV and make the bandgap temperature-insensitive. Temperature-dependent PL shows a signature of localization effect with Bi incorporation.

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Manuscript ID.  0599
Paper No.  2021-SAT-P0102-P018
Jia-Jie Jhang Ultraviolet/Visible Broadband Photodetector based on Perovskite/ZnO nanorod heterojunction
Ming-Hsien Li;Jia-Jie Jhang;Shih-Ming Chen;Jun-Ru Chen;Lin-Sin Lu;Peter Chen;Hsiang Chen;Chia-Feng Lin;Jung Han

A high-performance broadband photodetector based on perovskite/ZnO nanorods was fabricated. The perovskite/ZnO nanorods photodetectors were sensitive to ultraviolet and visible light, while pure ZnO nanorods photodetectors were only sensitive to ultraviolet light. Perovskite/ZnO nanorods composites are promising materials for broadband wavelength detection from ultraviolet to visible light.


Manuscript ID.  0636
Paper No.  2021-SAT-P0102-P019
Yi-Min Huang The Generation of Dark-Current and Photo-Current of InP-Based APDs Dependence on Optical Window Areas
Yi-Min Huang;Wen-Jeng Ho;Jheng-Jie Liu;Chia-Chun Yu;Yen-Chu Li

In this study, the optical and electrical characteristics of the InP-based APD with the same epitaxial-layers and processing parameters but with the different optical-window areas were demonstrated. The dark-current increases with the window area, however, the photo-current density decreases with the window areas increasing when it biased at 0.9 VBR.The fabrication and characteristics of InP/InGaAs SAGCM APD were demonstrated. Impressive lower dark-current and higher photo-current density of 50 μm APDs was obtained. We expected that the performance of 200 μm APDs can be improved through using a transparent conductive oxide film as good passivation and antireflection.

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Manuscript ID.  0677
Paper No.  2021-SAT-P0102-P020
Yung Jyun Liao Insertion of InGaAs quantum well for improving the optical properties of InAs quantum dots with 1.3 μm emission
Yung Jyun Liao;Wei Sheng Liu;Yang Kai Hsu;Ming En Hsu

In this study, the InAs self-assembled quantum dots (QDs) were epitaxial grown on In0.15Ga0.85As/GaAs quantum well by molecular beam epitaxy. The photoluminescence emission wavelength of InAs QDs were observed extending from 1262 nm to 1344 nm with increased dot density in contrast to the InAs QDs grown on GaAs buffer layer.


Manuscript ID.  0688
Paper No.  2021-SAT-P0102-P021
Yu Lun Jiang Effect of Nitrogen ratio on the Growth of High Quality AlN on Si<111> Substrate by RF Magnetron Sputtering
Yu Lun Jiang;Wei Sheng Liu;Sui Hua Wu;Balaji G;Chung Kai Chi;Li Cheng Huang

The AlN film was grown on Si<111> substrates by using RF magnetron sputtering at substrate temperature of 600˚C. The AlN film was deposited with varied nitrogen ratio of the Ar: N2 mixture gases of 50, 75, and 100 %. At 100% nitrogen ratio, the crystal orientation of AlN film was <002>, and it had better RMS and hardness.


Manuscript ID.  0699
Paper No.  2021-SAT-P0102-P022
Sui Hua Wu The effects of growth temperatures on the growth of high quality AlN (002) thin films on Si (111) substrate by RF magnetron sputtering
Sui Hua Wu;Wei Sheng Liu;Li Cheng Huang;Chung-Kai Chi;Balaji Gururajan;Yu Lun Jiang

he RF power of 500 W was adopted for the sputtering growth of AlN film on Si (111) substrate with pure nitrogen plasma and varied growth temperatures from 400 °C to 800 °C in this study. Through high-resolution XRD measurement, it is found that the AlN film has AlN (002) crystal orientation and the strongest XRD AlN(002) peak intensity can be obtained at a temperature of 600 °C, indicating the optimum AlN crystal quality.

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Manuscript ID.  0701
Paper No.  2021-SAT-P0102-P023
Yung Chen Li Comparative studies of Zn(O:S) thin films by post sulphurization of RF sputtering- deposited ZnO layers
Yung Chen Li;Wei Sheng Liu;Balaji G;Ming Hsuan Tsai

This study discusses about Cd free (Zn(O:S)) as an alternative buffer layer applied for CZTS thin-film solar cells. Zn(O:S) thin film was prepared by post sulphurization of RF sputtering-deposited ZnO layers. The samples were subjected to a high-temperature sulphurization at the temperatures ranged from 200 to 300, 400 and 500°C for studying the effect of temperature on the structural and optical properties of the Zn(O:S) thin films.


Manuscript ID.  0706
Paper No.  2021-SAT-P0102-P024
Kai-Yang Hsu Effects of indium composition of InGaAs quantum well on the optical properties of InAs/InGaAs dots-in-a-well structure
Kai-Yang Hsu;Wei-Sheng Liu;Ming-En Syu;Po-Hao Chang;Yung-jyun Liao

In this study, the Indium composition of InGaAs quantum well of InAs/InGaAs dots-in-a-well (DWELL) structure were studied to improve the dot-size uniformity, dot density and optical properties of InAs quantum dots (QDs). In addition, the density of epitaxial defective coalescent dots was also found significantly reduced as decreasing the Indium composition of the InGaAs well.


Manuscript ID.  0370
Paper No.  2021-SAT-P0102-P025
Ming-Ru WEN Novel Quantum Dot Light-Emitting Diodes Based on Nanoporous Nickel Oxide as the HIL
Wei-Sheng Chen;Ming-Ru WEN;Sheng-Hsiung Yang;Wei-Sheng Chen

Quantum dot light-emitting diodes (QLEDs) using nickel oxide (NiOx) thin film or nanoporous layer (NPL) as the hole injection layer (HIL) were fabricated for comparison. The obtained NiOx NPLs have sponge-like nanostructures that possess larger surface area to enhance carrier injection and to lower turn-on voltage of devices, as compared with the NiOx thin film. The best QLED was achieved with 30 nm-thick NiOx NPL, revealing a maximum brightness of 68,646 cd m-2, a current efficiency of 7.60 cd A-1, and a low turn-on voltage of 3.4 V.

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Manuscript ID.  0090
Paper No.  2021-SAT-P0102-P026
Guan-Hong Li Optical properties and mode analysis of tripod structures of metallic gyroids
Yi-Ting Lin;Guan-Hong Li;Yu-Chueh Hung

In this study, we carry out numerical investigations on optical properties of tripods of metallic gyroids. Extinction and circular dichroism spectra are presented to examine how chiro-optical properties evolve under different structural parameters and excitation conditions. The results provide physical insights towards the understanding of chiral plasmonics in metallic gyroids.


Manuscript ID.  0150
Paper No.  2021-SAT-P0102-P027
Tzu-Hsin Hsiao Preparation and characterization of flexible DNA resistive switching devices
Tzu-Hsin Hsiao;Yu-Yu Chen;Yu-Chueh Hung

In this study, we present the preparation and characterization of DNA resistive switching devices on a flexible substrate. The curved DNA devices exhibit resistive switching responses of multiple sweeping cycles and morphological properties of the bending devices are also examined. Our results show that DNA biopolymer holds great promise for the applications of flexible bio-electronics.


Manuscript ID.  0629
Paper No.  2021-SAT-P0102-P028
Ying-Yu Wang Waveguide-coupled surface enhanced Raman scattering substrates using lithium niobate ferroelectric templates
Ying-Yu Wang;Zhe-Yuan Liu;Hsin-An Chi;Tzyy-Jiann Wang

Novel SERS substrates integrated with optical waveguides for excitation and collection of Raman signals are proposed. The LiNbO3 ferroelectric template with zinc-diffused ridge waveguides produces silver nanoparticles by photoreduction for Raman signal enhancement. The SERS detection for R6G reveals limit of detection of 1.58×10-9 M and enhancement factor of 2.84×109.


Manuscript ID.  0691
Paper No.  2021-SAT-P0102-P029
Yu-Hsin Chia Moiré Metalens for Optical Sectioning Fluorescence Microscopy
Yu-Hsin Chia;Hsin-Yu Kuo;Sunil Vyas;Yi-You Huang;Yuan Luo;Din Ping Tsai

We present a Moiré metalens-based optical sectioning fluorescence, which utilizes the telecentric design to obtain constant magnification images over a long axial scanning range. The Moiré metalens consists of two complementary phase metasurfaces. Furthermore, the imaging system incorporates structured illumination to capture the HiLo optical sectioning images.


Manuscript ID.  0698
Paper No.  2021-SAT-P0102-P030
Wei-Sheng Liu Improving device characteristics of dual-gate IGZO thin-film transistors with rapid thermal annealing process
Yu Jiang;Wei-Sheng Liu;Chih-Hao Hsu

In this study, high-performance indium–gallium–zinc oxide thin-film transistors (IGZO TFTs) with a dual-gate (DG) structure were manufactured and the device operation performances were improved by using rapid thermal annealing (RTA) process with thermal treatment temperatures ranging from 100 °C to 300 °C.

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Manuscript ID.  0702
Paper No.  2021-SAT-P0102-P031
Guan-Ru Chen Influence of growth temperature of InAs/GaSb Type II Superlattice Infrared Photodetector prepared using Molecular Beam Epitaxy
Guan-Ru Chen;Wei-Sheng Liu;Po-Hao Chang;Balaji G;Tsun-Jie Ko;Ming-En Syu;Jen-Inn Chyi

This work discusses about the use of Molecular Beam Epitaxy (MBE) to grow InAs/GaSb Type II superlattices (T2SL) on GaSb substrates and focuses on studying the effects of growth at different epitaxial temperatures using the same device structure. Further investigations will be performed to obtain a suitable growth temperature


Nanophotonic Materials and Devices

Nanophotonic Materials and Devices VI
Saturday, Dec. 4, 2021  10:45-12:15
Presider: Prof. Jui-Yang, Feng (NKU)
Room: 302a
10:45 - 11:00
Manuscript ID.  0211
Paper No.  2021-SAT-S0106-O001
Coung-Ru Yan Device Performance Optimization of 2D Material Transistors Fabricated on Wafer-scale MoS2
Coung-Ru Yan;Po-Cheng Tsai;Shoou-Jinn Chang;Shih-Yen Lin

2D material transistors are fabricated on wafer-scale MoS2 films prepared by the two-stage growth procedure. RF sputtering and the ALD are adopted to deposit Mo precursor on sapphire substrates before sulfurization. The higher field-effect mobility value of the MoS2 transistor fabricated by using ALD reveals that a uniform precursor distribution will help to form MoS2 films with improved crystallinity. With improved crystallinity of contact electrodes grown at higher temperatures, enhanced device performances are observed. By using antimonene as the contact metal, high field-effect mobility 2.03 cm2/V·s and > 105 ON/OFF ratio is observed for the MoS2 transistor prepared by ALD.

11:00 - 11:15
Manuscript ID.  0291
Paper No.  2021-SAT-S0106-O002
Rong-Sheng Lin Small Pixel Pigment/meta hybrid IR cut filter
Chih-Ming Wang;Rong-Sheng Lin

An IR cut filter, consisting of metasurface embedded in pigment layer, is designed and fabricated. Via the absorption enhancement provided by the metasurface, the thickness of the pigment layer can be significantly reduced which benefits a small pixel CMOS image sensor.

11:15 - 11:30
Manuscript ID.  0607
Paper No.  2021-SAT-S0106-O003
Da-Jhong Lin OOK Transmission Using Silicon-Photonic Transmitter With Right-Arm MZM for Phase Shift
Da-Jhong Lin;Zih-Yuan Ciou;Kuo-Fang Chung;Shih-Chun Kao;Ding-Wei Huang;Gong-Ru Lin

Inputting an OOK can be used to increase the degree of change in the depletion region of silicon-MZM, increasing the modulation power from 0.4mW to 0.6mW, which can improve the clarity of signal transmission, thereby increasing the transmission frequency, and reducing the modulation bias from 3V to 2.6 V, can reduce power consumption.

11:30 - 11:45
Manuscript ID.  0638
Paper No.  2021-SAT-S0106-O004
SUROJIT CHATTOPADHYAY Nanohybrid Designs for Broadband and Fast Photodetectors

Hybrid material design is required to extract broader spectrum of performance in the field of optoelectronic devices, such as photodetectors (PD). We report hybrid PD based on two-dimensional (2D) graphene, and MoS2 in composite with 0D upconversion nanoparticles (UCNPs), and 1D AuNRs. The objective is to improve the poor broadband responsivity of the semiconductor based devices. Careful design of the PDs with high quality Graphene/MoS2, UCNPs (for NIR photoresponse), and AuNRs (for faster response times) yielded high Responsivity ~10^4 A/W (using Graphene/UCNPs PD), Detectivity ~ 10^15 Jones (using MoS2/UCNPs PDs), and a response time of 80 ms (using Graphene/UCNPs/AuNRs PDs).

11:45 - 12:00
Manuscript ID.  0676
Paper No.  2021-SAT-S0106-O005
Guan-Bo Lin Terahertz metalenses fabricated with photolithography
Guan-Bo Lin;You-Chia Chang;Tsung-Chieh Tseng;Yu-Hang Wang;Jian-Yu Wu;Peichen Yu;Shang-Hua Yang

We design and fabricate all-silicon, polarization-independent metalenses operating at 1 THz. The metalenses consist of 180-μm-tall pillars arranged in a hexagonal lattice. We engineer the phase profile by varying the pillar diameter. By using pillar diameter from 35 to 90μm, we obtain full 2π phase coverage. We perform full-wave 3D finite-difference time-domain simulation to obtain the focusing intensity distribution and demonstrate diffraction-limited performance. We fabricate the metalenses with photolithography and bosch plasma etching. The measured focusing efficiency of the fabricated metalens is 46.1 %.

12:00 - 12:15
Manuscript ID.  0711
Paper No.  2021-SAT-S0106-O006
Jeng Yi Lee Parity symmetry of reflection and optical pulling force in parity-time symmetric photonic systems
Jeng Yi Lee;Pai-Yen Chen

Based on the Lorentz reciprocity theorem, we propose a generalized parametric space for any parity-time (PT) symmetric photonics. With the general parametric space, we can indicate complete information on broken symmetric phases, exceptional point, and reflectance. Quite counter-intuitively, we find PT-symmetric photonics can support isotropic reflectance and optical pulling forces.

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