Session Index

Nanophotonic Materials and Devices

Poster Session I
Thursday, Dec. 7, 2017  12:30-14:00
Presider: -
Room: International Research Building 5F
Paper No.  2017-THU-P0101-P001
Sheng-Rui Wu Radiative cooling metasurface based on phase change metamaterial
Sheng-Rui Wu;Kuan-Lin Lai;Chih-Ming Wang

In this paper a frequency-tunable metamaterial in the mid-infrared range is theoretically demonstrated by using insulator-metal phase transition material, vanadium dioxide(VO2). Through adjusting geometric parameters of proposed structure can get high-intensity net radiation power, and has great potential for adjustable optical switch or passive radiative cooling.

Paper No.  2017-THU-P0101-P002
Chen-Yu Huang Award Candidate Plasmonic Hot-electron Excitation from Planer Metal-Semiconductor-Metal Structures
Chen-Yu Huang;Kuo-Ping Chen

We propose a planer metal-semiconductor-metal (MSM) device for hot-electron excitation. Surface plasmon enhahance the photoemmission of hot electron and inject to the wide band gap materials (Zinc Oxide). Hot electrons are collected by the bottom metal to provide the photocurrent enhancement

Paper No.  2017-THU-P0101-P003
Liang-Jhih Wang Award Candidate Highly Sensitive 1D Photonic Crystal Strain Sensors with Nanoclamps
Liang-Jhih Wang;Tsan-Wen Lu;Po-Tsung Lee

We propose a novel nanoclamp structure that can produce non-uniform structural deformation distribution under an applied stain. Combined with this nanoclamp, the wavelength response and minimum detectable strain from 1D photonic crystal nanocavity embedded in a deformable material are significantly improved to be 10.9 nm/% and 0.2 ‰ in experiments.

Paper No.  2017-THU-P0101-P004
Zih-Ying Yang Award Candidate High Q-factor Selective Thermal Emissions by Tamm Plasmon Structures
Zih-Ying Yang;Mao-Guo Sun;Kuo-Ping Chen

Infrared wavelength selective thermal emission based on Tamm plasmon is experimentally demonstrated with ultra-sharp resonance. The excitation of Tamm plasmon polaritons (TPPs) occurs between a distributed Bragg reflector and a metal film. The proposed structure could achieve twice higher Q-factor for the measured emissivity comparing to typical plasmonic thermal emitters.

Paper No.  2017-THU-P0101-P005
Shiau-Yuan Huang Award Candidate Deep-Ultraviolet Aluminum-Gallium Oxides Photodetectors Grown by Pulsed Laser Deposition
Shiau-Yuan Huang;Shuo-Huang Yuan;Chien-Ming Chen;Chao-Chun Wang;Dong-Sing Wuu

Deep-ultraviolet photodetectors were fabricated from epitaxial aluminum gallium oxide ((AlGa)2O3) films by pulsed laser deposition. The photodetector shows an excellent device performance where the photocurrent, dark current, and responsivity (@5 V and 240 nm) are measured to be 6.4 × 10−8 A, 8.2 × 10−13 A, and 0.5 A/W, respectively.

Paper No.  2017-THU-P0101-P006
Wei-Ren Lin Award Candidate Characterization of Current Collapse Phenomenon in Enhancement mode GaN-Based HEMTs Using an AlGaN/GaN/AlGaN Double Heterostructure
Wei-Ren Lin;Jian-Jang Huang;Shin-Yi Ho

In this paper, the Current collapse phenomena were studied on devices of E-mode MIS, Schottky gate and field-plate HEMTs using enhancement mode (E-mode) AlGaN/GaN/ AlGaN double heterostructure. The results indicate the suppression of current collapse for devices with double heterostructure.

Paper No.  2017-THU-P0101-P007
Bo Han Chen Award Candidate Pixel-level full-color routing metalens at visible light
Bo Han Chen;Pin Chieh Wu;Vin-Cent Su;Yi-Chieh Lai;Cheng Hung Chu;I Chen Lee;Jia-Wern Chen;Yu Han Chen;Yung-Chiang Lan;Chieh-Hsiung Kuan;Din Ping Tsai

We demonstrate a single multiplex color router with dielectric metalens, which is capable of guiding individual primary colors into different spatial positions, is experimentally verified based on the design of out-of-plane focusing metalens.

Paper No.  2017-THU-P0101-P008
Yu-De Lin Award Candidate Field-Enhanced Direction-Controllable Surface Plasmon Vortices in a Metasurface under Linearly-Polarized Excitation
Yu-De Lin;Chen-Bin Huang

Dynamic control to the direction of surface plasmon vortices is numerically achieved by changing the orientations of the linearly-polarized optical excitations. With a half-etched circular cavity centered at the origin, we show that the vortex intensity can be enhanced by a factor of 3.7.

Paper No.  2017-THU-P0101-P009
Si-Yuan Chan Award Candidate Enhanced performance of near-UV electroluminescence from Al-decorated n-ZnO/p-GaN heterojunction light-emitting diodes
Si-Yuan Chan;Ching-Yen Wang;Hsu-Cheng Hsu

We report the enhanced electroluminescence (EL) from heterojunction LEDs of p-GaN film/n-ZnO nanoparticles structure decorated with aluminum (Al) nanoparticles. By changing the structure of devices, the performance of near-UV EL was optimized. Among them, ZnO/Al/ZnO sandwich-structured LED shows the superior performance.

Paper No.  2017-THU-P0101-P010
Yan-Ting Liu Award Candidate In-situ Observation of Moisture-induced Phase Transition in CH3NH3PbI3 Perovskite Thin Films
Yan-Ting Liu;Bo-Lun Jian;Li-Te Tseng;Zi-Wei Huang;Hsu-Cheng Hsu

We report the phase evolution of CH3NH3PbI3 perovskite thin films under a humid environment by using in-situ photoluminescence measurement. Under high humidity condition of 99%, photoluminescence intensities of the tetragonal phase show gradually an increase tendency, whereas a decrease of photoluminescence intensities from the traps states is observed.

Paper No.  2017-THU-P0101-P011
Chien-Ying Huang Award Candidate An Ultrasensitive Nanoplasmonic Sensor Utilizing Plasmon Coupling in Sevenfold Nanorod Array
Hung-chun Chang;Chien-Ying Huang

A novel design for ultrasensitive nanoplasmonic sensor by utilizing the coupling interaction between sevenfold nanorods is demonstrated. The figure of merit achieved is up to 26.55, which is a great improvement for localized surface plasmon resonance (LSPR) based nanosensors.

Paper No.  2017-THU-P0101-P012
YUEH-HENG CHUNG Award Candidate Physical bounds of scattering distribution on passive systems
YUEH-HENG CHUNG;Jeng Yi Lee;Ray-Kuang Lee

By taking power conservation , we proposea phase diagram for scattering coefficients through its modulus and phase. All the supported scattering results can be depicted in a single map. By means of this phase diagram, we reveal the physical limits of scattering distribution for a passive scatter.

Paper No.  2017-THU-P0101-P013
Chun-Ron Chang Novel Perovskite:PVK Light-Emitting Devices Based on Zinc Oxide Nanorod Arrays
Szu-Ping Wang;Chun-Ron Chang;Sheng-Hsiung Yang;Che-Yu Chang;Yu-Chiang Chao

We demonstrate inverted perovskite light-emitting devices based on ZnO nanorod arrays as the electron transport layer and methylammonium lead bromide nanoplatelets (MAPbBr3 NPLs) as the emissive material. Different weight ratios of poly(N-vinylcarbazole) were blended with MAPbBr3 NPLs to make evenly dispersed nanocomposite films, thereby enhancing the performance of devices.

Paper No.  2017-THU-P0101-P014
Ming Sheng Lai Award Candidate Manipulating Circular Polarization Light by the Building Block of Plasmonic Gold Nanorods
Ming Sheng Lai;Hsiang Ting Lin;Min Hsiung Shih

The asymmetry modal profile of dimer nanorods (DNRs) was achieved by controlling the shift dimer nanorods (SDNRs). The D+ and D- SDNRs structure exhibit the selection of right and left circular polarization light, respectively. In experimental results, the circular dichroism value of SDNRs can obtained from 15% to -15%.

Paper No.  2017-THU-P0101-P015
Hsuan-Wei Chang Award Candidate Surface enhanced Raman scattering by photoreduced silver nanostructures produced using electrostatic-field-tunable ferroelectric template
Hsuan-Wei Chang;Hsi-Yang Hsu;Ta-Hung Cheng;Hai-Pang Chiang;Yi-Ru Li;Pei-Kuen Wei;Tzyy-Jiann Wang

We present a novel ferroelectric template to produce photoreduced silver nanostructures on LiNbO3 for Raman scattering enhancement. The proposed ferroelectric template possesses the electrostatic field tunability, which facilitates the production of optimal silver nanostructure. The Raman signal intensity has a 2.51 times enhancement in comparison with the conventional ferroelectric template.

Paper No.  2017-THU-P0101-P016
Yu Han Chen Award Candidate High efficient metallic metalens
Yu Han Chen;Pin Chieh Wu;Jia Wern Chen;Cheng Hung Chu;Bo Han Chen;Ren Jie Chen;Yi Chieh Lai;Din Ping Tsai

Metalens recently has been attracted a lot of attention because its ability on converging light with ultra-thin dimensions. In our work, a metallic metalens composed of C-shaped aperture integrated with two orthogonal gratings are proposed to improve the working efficiency in near infrared region.

Paper No.  2017-THU-P0101-P017
Chi-Tsung Tsai Award Candidate High-Quality 280 nm AlGaN Multiple Quantum Wells on Low-Defect AlN-on-Sapphire Templates
Chi-Tsung Tsai;Tzu-Yu Wang;Chia-Feng Lin;Dong-Sing Wuu

High internal-quantum-efficiency (IQE) AlGaN multiple quantum wells (MQWs) were successfully demonstrated on low-defect-density AlN templates with nano-patterned sapphire substrates. The AlN crystallinity was systematically improved, an ultra-low etching pit density of 1×105 cm-2. The relative IQE of 280 nm AlGaN MQWs exhibited a dramatically increase from 22.8% to 85%.

Paper No.  2017-THU-P0101-P018
Yu-Sheng Chen Award Candidate Tamm Plasmon Polaritons Hydrogen Sensors
Yu-Sheng Chen;Zih-Ying Yang;Chen-Yu Huang;Kuo-Ping Chen

Tamm plasmon polariton resonance is observed in the band gap of 1D photonic crystal coating with a thin metal film. Utilizing the palladium in TPP devices, Pd could change its optical and structural properties, when exposure hydrogen gas. Therefore, TPP shows a high sensitivity for hydrogen sensing in visible wavelengths.