Student Paper Award Announced!!

Session Index

Nanophotonic Materials and Devices

Poster Session 3
Friday, Dec. 5, 2014  11:00-12:10
Paper No.  2014-Fri-P0103-P001
Chiao-Chin Chen Simulation of LEDs with two-dimensional photonic crystal band gaps
Chiao-Chin Chen,Kai-Jie Liu,Tan-Ying Yu,G. M. Wu,

We simulate the photonic crystal structures with the relevant parameters, such as refractive index and periodicity arrangement. If we can take advantages of the limitations of photonic crystal band characteristics, it is possible to guide the light emitted from the LED devices, and thus enhance the light extraction efficiency.

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Paper No.  2014-Fri-P0103-P002
Jun-Shou Lin Annealing effect on MgZnO Schottky-barrier photodetectors
Jun-Shou Lin,Jun-Dar Hwang,

Various temperature annealing effects of MgZnO films on the schottky-barrier photodetectors (SB-PDs) have been investigated. With increasing anneal temperature, the optical bandgap becomes narrower due to released compressive strain, however the bandbap increases in the 900 oC annealed MgZnO as a result of increasing Mg content. The highest Schottky-barrier height (SBH) occurs in the SB-PDs with 700 oC anneal due to better crystallinity and fewer defects. Though the 900 oC annealed SB-PDs exhibits larger defects, however it presents slight higher SBH than the 800 oC annealed one due to higher optical bandgap.

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Paper No.  2014-Fri-P0103-P003
Shih Yu Fu Facile Synthesis of Cu2S Nanoarchitectures and Application of Enhanced Raman Signals
Shih Yu Fu,Hao Hsuan Chang,Yu Kuei Hsu,Yan Gu Lin,

Take Successive ionic layer absorption and reaction(SILAR) as main method to form Cu2S nanoarchitectures and use thermal process to modulate the plasmon frequency . By these kind of process, made a better substrate to enhance signals of Raman. Simple, easy, non-toxic and abundant element.

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Paper No.  2014-Fri-P0103-P004
Chih-Chun Mai A Photoluminescence study of semipolar InN on Sapphire substrate
Fang-I Lai,Chih-Chun Mai,Chun-Hua Hu,Woei-Tyng Lin,Jui-Fu Yang,Wei-Chun Chen,Chien-Nan Hsiao,

This study is focus on optical properties of semipolar indium nitride grown on sapphire substrate. TDPL, PDPL, TRPL showed carrier recombination, localization depth, and lifetime.

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Paper No.  2014-Fri-P0103-P005
Ya Ting Liang Plasmonics Resonance in Titanium Nitride Nanoparticles and Thin-Films
Ya Ting Liang,

This study investigates the plasmonic resonance in titanium nitride (TiN) thin-films and nanoparticles. Different plasma frequency of TiN nanoparticles is found in liquid. This study illustrates the potential of TiN as an alternative plasmonic materials for the application in nanophotonics and metamaterials .

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Paper No.  2014-Fri-P0103-P006
Zu-Po Yang Strong ultraviolet emission from n-ZnO/p-GaN light-emitting diodes composed of slanted ZnO nanorod arrays
Zu-Po Yang,Chia-Ching Lin,Zhong-Han Xie,Ya-Ju Lee,

Slanted and planar n-ZnO/p-GaN LEDs were fabricated by oblique angle deposition and conventional deposition techniques, respectively, using a RF sputtering system. The results show that the slanted n-ZnO/p-GaN LEDs have better performance in electrical and optical properties than the planar one and are more suitable for UV emission devices.

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Paper No.  2014-Fri-P0103-P007
BING REUI CHEN Plasmonic Resonance in Gold and TiN Nanoantennas embedded in Organic Solar cells

Finite element method (FEM) was applied to analyze gold and TiN nanoantennas embedded in an organic thin film. Far-field transmittance spectra in different wavelength range were simulated for comparison. The result shows the TiN nanoantennas have broader absorption range in visible to NIR.

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Paper No.  2014-Fri-P0103-P008
Meng-Han Fang Silver Nanoparticles Sprinkled on Silver Nanoparticle Array for Metal Enhanced Fluorescence
Jiunn-Woei Liaw,Jeng-Cherng Chiou,Meng-Han Fang,Shang-Yung Yu,Hai-Pang Chiang,

We combined NSL and RIE to fabricate a substrate with periodic silver nanoparticle array, and then used the thermal evaporation to sprinkle 5-nm silver nanoparticles on these nanostructures. Compared to DCJTB on silver nanoparticle array, the PL intensity of DCJTB coated on the new nanostructures is increased and the lifetime is reduced.

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Paper No.  2014-Fri-P0103-P009
Jhih-Cyuan Jiang Design of a plasmonics silver dimer nanoantenna
Jhih-Cyuan Jiang,Wayne Yang,Gung-Jing He,Yuan-Fong Chau,

A dielectric hole plasmonic nanoantenna is proposed and investigated. We examine the influence of the shell thickness, gap width and dielectric media filled inside the hollows on the antenna resonance conditions. It is possible to tune a plasmonic nanoantenna with a constant length over a broad spectral range.

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Paper No.  2014-Fri-P0103-P010
Yu-Shen Huang Coherent acoustic phonons oscillation of a c-plane ZnO thin film below the exciton resonance
Yu-Shen Huang,Ja-Hon Lin,

Coherent acoustic phonons (CAPs) oscillation in 147 nm c-ZnO thin film was investigated at room temperature through degenerate transient differential reflectance (TDR) measurement by femtosecond pulses with excitation energy below the exciton resonance. At fixing pump wavelength, the amplitude of CAPs oscillation increased with increasing excitation power.

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Paper No.  2014-Fri-P0103-P011
Cheng-Hsun Chu High performance Cu2O/ZnO core-shell nanorod arrays synthesized using a nanoimprint GaN template by the hydrothermal growth
Cheng-Hsun Chu,Hsiang-Chen Wang,

Nanoimprint technology was used to synthesize a series of nanostructures with hexagonal holes on a n-GaN baseplate. The hydrothermal growth technique was then used to produce 1.5-μm n-type ZnO nanorods. Radio frequency reactive magnetron sputtering was employed to grow a 50-nm thick layer of cuprous oxide film over the nanorods to form a p-n Cu2O/ZnO core-shell structure. Based on the different imprint widths and intervals obtained, Cu2O/ZnO heterostructure samples A, B, C, and D showed aperture ratios of 0.0627, 0.0392, 0.0832, and 0.0537, respectively. Scanning electron microscopy and atomic force microscopy indicated that a 50-nm Cu2O film coated the ZnO nanorods, forming a core-shell structure. X-ray diffraction and x-ray rocking curve (XRC) analysis showed that the Cu2O lattice structure had polycrystalline characteristics. The lattice planes of Cu2O were (111) and (220), and Sample C exhibited the narrowest XRC half-height full-width value. Therefore, among the samples obtained, Sample C had the optimal material properties. The novel structure obtained can potentially be used in solar cell applications.

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Paper No.  2014-Fri-P0103-P012
Hsin-Yu Wu Silver Island on Metal Enhanced Fluorescence
Chu-Chuan Huang,Hsin-Yu Wu,Mao-Kuen Kuo,Jiunn-Woei Liaw,

The plasmonic effect of a silver island, modelled as an oblate nanospheroid, on metal enhanced fluorescence is studied theoretically. Our results show that the enhancement factor depends on the aspect ratio of oblate nanospheroid, the excitation and emission wavelengths as well as the molecular location and orientation.

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Paper No.  2014-Fri-P0103-P013
Yang Bing Rong Electrical Properties for MOS Devices of High-k Gate Dielectric Grown by Atomic Layer Deposition
Lowchee yun,YangBing Rong,

HfO2, Al2O3 are deposited on n-type Si using atomic layer deposition. The as-grown HfO2 film exhibits amorphous structure, but becomes monoclinic structure after 400oC post-oxide annealing. The Al2O3 film showed amorphous structure both in as-grown and annealed conditions. The dielectric constants of HfO2 and Al2O3 were confirmed by MOS structure from C-V measurement while the gate leakage current was obtained from I-V measurement.

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Paper No.  2014-Fri-P0103-P014
Chih-Chien Huang Optical and morphology properties of Al-doped ZnO nanorods by hydrothermal method
Chien-Sheng Huang,Chih-Chien Huang,

In this study, it was found that optical properties of zinc oxide improved by Al doping under PL inspection. Furthermore, under illumination by a 365nm UV and at 1 V applied bias, the Al-doped ZnO nanorods photodetector performed the characteristics of high photocurrent to dark current ratios and good repeatability.

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Paper No.  2014-Fri-P0103-P015
Chang-Wei Chen Enhancement of optoelectronic properties by inserting uniform nano-Ag particles in ultra thin Al–doped ZnO layers
Chang-Wei Chen,Ze-Syue Wu,Yen-Sheng Lin,

In this study, the AZO (Al-doped ZnO) thin films and insetting nano-silver structures were deposited on glass substrates by RF magnetron sputtering machine. The etched AZO had been done as a seed layer, which the roughened surface structures are expected to lead the distribution of nano-silver to enhance the conductive properties of thin film and also improved the transmittance. The results shown that the AZO seed layer was treated after 500 ℃ annealing and the surface was etched by 0.1 % Nitric Acid (HNO3) at 150 seconds, the lower resistance of 4.67×10-5 Ω-cm was measured, and the average transmittance in visible range from 360-780 nm is about 88.7 %, and the best figure of merit of the AZO(20nm)/nano-Ag/AZO(20nm) ultra-thin film is 2.84×10-2 Ω-1.

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Paper No.  2014-Fri-P0103-P016
Shih-Chang Chang Fabrication of the Cu2SnS3 thin film by using different concentration of solution and sulfurization
Shih-Chang Chang,Shih-Chang Shei,Chi-Jie Wang,Shin-Hone Chen,

In this study, we fabricate different Cu-Sn-S precursors by using different concentration of solution. And then get the CTS thin films by sulfurizing under sulphur atmosphere. Using the solution, which exist only binary phase, the pure CTS thin films is fabricated.

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Paper No.  2014-Fri-P0103-P017
Bo-Yi Wu Synthesis of CuInS2-ZnS quantum dots for different temperatures by one pot method route
Bo-Yi Wu,Lung-Wei Huang,Shih-Chang Shei,

This paper reports one pot method synthesis toward the synthesis of CuInS2/ZnS hybrid nanoparticles.CuInS2 quantum dots (QDs) were synthesized in the non coordinating solvent octadecene using copper chlorine, indium chlorine, ODE and dodecanethiol. CuInS2 QDs with diameter of 2~5 nm were obtained by tuning the reaction temperature and time.

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Paper No.  2014-Fri-P0103-P018
Ting-Yu Kuo Depolarization Ratio of Gold-Nanorod Colloid
Ting-Yu Kuo,Wei-Jiun Lo,Mao-Kuen Kuo,Jiunn-Woei Liaw,

The depolarization effect of gold-nanorod (GNR) colloid was studied using multiple multipole method. Moreover, the average depolarization ratio of GNR were calculated by considering all possible orientations to present the overall performance of a large number of monodispersed and randomly oriented GNRs.

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Paper No.  2014-Fri-P0103-P019
Chong-Yu Wang Synthesis and characterization of CuInS2/ZnS quantum dots with different reaction time
Chong-Yu Wang,Liang-Wei Lin,Shih-Chang Shei,

CuInS2 quantum dots (QDs) were synthesized by via non-coordinated system. The different ZnS shell growth time was employed to control the emission wavelength. We could observed that the emission wavelength of QDs gradually blue-shifted from 750 to 655 nm. PL QYs of CIS/ZnS QDs were measured to be 30.6%.

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Paper No.  2014-Fri-P0103-P020
Li-Li Chang Influence of Growth Positions on the Morphology and Crystallinity of ZnO Nanowires with Vapor Phase Transport Process
Yu-Ciang Zeng,Li-Li Chang,Su-Hua Yang,

ZnO nanowires (NWs) are grown on the ZnO doped Al (AZO) seed layer by a vapor phase transport process. The growth position was varied at 3, 5 and 7 cm. Effects of growth position on the crystallinity, cathodoluminescsnce, and field emission properties of ZnO NWs were studied.

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Paper No.  2014-Fri-P0103-P021
Fu-Sheng Wang Preparation of visible light photocatalyst by nitrogen doping and double phase design of titanium oxide
Fu-Sheng Wang,Yi-Jia Chen,

We successfully prepared the visible-light photocatalyst by annealing the nitrogen-containing gel at 600oC, and then mixed with the commercial P25 powder, followed by ball milling. The resulting powder is duel phase with yellow color. The photocatalytic effect of the methylene blue decomposition is much more pronounced than single phased photocatalyst.

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Paper No.  2014-Fri-P0103-P022
Yang Tzung Cheng The Growth of CuO Nanowire with Thermal Annealing Method
YangTzung Cheng,LinChi Feng,HanHsieh Cheng,

In this work, we fabricated the CuO nanowire with thermal annealing method. The length and the distribution of nanowire were influenced by annealing temperature and annealing time seriously. This result shows a simple way to prepare the metal oxide nanowire for the application for gas or bio sensor.

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Paper No.  2014-Fri-P0103-P023
Chen HongWun Multi-wavelength-resolution hyperlens by controlled magnetoplasmons
Chen HongWun,Cheng BoHan,Lan Yung Chiang,

We propose and analyze a magnetically controlled hyperlens which consists of a multilayered Semiconductor-dielectric structure for breaking optical diffraction limitation at terahertz region by controlling the magnitude of external magnetic field. This layered system can resolve subwavelength structures at various frequencies by changing the applied intensity of external magnetic field

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Paper No.  2014-Fri-P0103-P024
Chia-Hsun Chen Exciton dynamics of tetracene on silicon substrate with different surface treatments
Chia-Hsun Chen,Po-Hsun Chen,Pin-Hao She,Juen-Kai Wang,Tien-Lung Chiu,Chi-Feng Lin,Jiun-Haw Lee,

we varied the storage time of silicon substrates in vacuum box before deposited the tracene thin films. Under measurement of time-resolved photoluminescence, as storage time increase, the thickness of native oxide will growth gradually and more singlet exciton generated by tracene will be blocked from silicon substrate and undergoes singlet fission.

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Paper No.  2014-Fri-P0103-P025
Che-Yuan Chang Design Tool of Tamm Plasmon Mode Based on Admittance Loci
Che-Yuan Chang,Yi-Hsun Chen,Hao-Chung Kuo,Yu-Lin Tsai,Kuo-Ping Chen,

A Tamm Plasmon (TP) mode can be excited at the boundary of photonic crystal and metal. In this work, relation between TP mode and TP structure is revealed using admittance loci. A further design approach based on admittance loci is therefore proposed in this work.

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Paper No.  2014-Fri-P0103-P026
De-Li Zan Investigation of photocatalytic activities using silver nanoparticles on the surface of TiO2 layer
De-Li Zan,Rong-Moo Hong,Wayne Yang,Gung-Jing He,Yuan-Fong Chau,

We numerically investigated the surface plasmon resonance effects on photocatalytic activities using silver nanoparticles on the surface of TiO2 layer. Results show that the proposed structure exhibits much higher photocatalytic activity in a wide range of incident angle of light and broaden wavelength ranging in near-UV, visible and near-infrared.

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Paper No.  2014-Fri-P0103-P027
Shing Trong Wu Wide band spiral phase plate based on polymer dispersed liquid crystal
AndyYing Guey Fu,ShingTrong Wu,

This study demonstrates the helical wave fronts via a spiral phase plate (SPP) based on polymer dispersed liquid crystals (PDLCs). Because the PDLC is electric tunable, the plate can be used in a wide visible band.

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Paper No.  2014-Fri-P0103-P028
Xi Ding Characterization of FRET in DNA Biopolymer
Xi Ding,Cheng-Chi Wen,Yu-Chueh Hung,

We report an efficient Förster resonance energy transfer observed in solution of deoxyribonucleic acid complex containing two organic dyes—Rhodamine 6G and Sulforhodamine 640, which are the donor and acceptor, respectively. The effect of donor-acceptor ratio on FRET is discussed and the amplified spontaneous emission of the material is presented.

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Paper No.  2014-Fri-P0103-P029
Yu-Ping Chang Investigation of Au Bowtie Nanoantenna Arrays
Yu-Ping Chang,Hui-Hsin Hsiao,Hung-chun Chang,

The periodic Au bowtie-nanoantenna arrays are numerically studied with the finite-difference time-domain (FDTD) method. The field enhancement in the feed gap of the nanoantenna can reach few thousands. The influence of period lengths of arrays on the broad spectral range of the field enhancement is investigated.

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Paper No.  2014-Fri-P0103-P030
Ying-Syuan Chen Optical Torque on a Rotating Gold Nanoparticle
Wu-Chun Lin,Mao-Kuen Kuo,Jiunn-Woei Liaw,Ying-Syuan Chen,

How the optical torque induced by a circularly polarized light illuminating a gold nanoparticle (GNP) drives the GNP to spin continuously was studied theoretically. The Mie theory was used to calculate the Maxwell stress tensor on the surface of GNP, and then the optical force and torque were analyzed.

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Paper No.  2014-Fri-P0103-P031
Hsin-Yu Chang Graphene nanosheet crosslinked microstructures via multiphoton excited photochemistry
Hsin-Yu Chang,Chun-Yu Lin,Te-Fu Yeh,Hsisheng Teng,Shean-Jen Chen,

In recent years, two photon induced photochemistry has been studied and developed for creating three dimensional microstructures. In this study, we developed a novel technique has been proposed for developing 3D freeform GO microstructures via on two-photon crosslinking (TPC) with rose Bengal (RB) as the photoactivator.

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Paper No.  2014-Fri-P0103-P032
Xuan-You Lai The organic laser based on multistep photonic heterostructure
Chii-Chang Chen,Xuan-You Lai,

The polymer, poly(9,9-dioctylfluorene)(F8), is used to be the emitting material. The gained wavelength is obtained by using the amplified spontaneous emission (ASE). The threshold pumping energy is ~8.63μJ⁄pulse. The multistep photonic heterostructure have a Q-factor of the order of ten million (107) for the resonator wavelength of 451 nm.

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Paper No.  2014-Fri-P0103-P033
Hung Ji Huang Plasmonic Cooling?
Hung Ji Huang,Bo-Heng Liou,

Light absorption for plasmonic cooling was presented with light illumination on Pt thin film covered with water. The special case of “quantum plasmonic cooling” needs more advanced studies in the future.

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Paper No.  2014-Fri-P0103-P034
Yu-Chung Chang Fluorescence Enhancement and Quenching on Gold Thin Films
Tsung-Hsien Lin,Hsu-Fu Chang,Yu-Chung Chang,

Fluorescence enhancement on gold thin films was investigated. About one order of magnitude enhancement on fluorescence intensity was found when the spacer layer thickness was 10 nm. The enhancement also depended on the thickness of the gold layer. Largest enhancement was obtained when the thickness of gold was about 30 nm. Simulations were performed to elucidate the results.

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Paper No.  2014-Fri-P0103-P035
Ping-Chien Chang Highly Reflective Dielectric Grating Mirrors For Visible Light Applications
Ping-Chien Chang,Yung-Jr Hung,San-Liang Lee,

An all-dielectric low-contrast-grating reflector, composed of a top grating layer, an etch-stop layer and a bottom waveguide layer, with a total thickness of only 210 nm is proposed to achieve 100% reflection at visible to near-infrared wavelengths. This reflector can be applied to replace conventional DBR stack for a variety of applications including resonant-cavity light-emitting diodes.

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Paper No.  2014-Fri-P0103-P036
Li-Ching Huang Thin silica shell on gold nanoparticles
Li-Ching Huang,Shiuan-Yeh Chen,

A new method was described to prepare Au@SiO2 core-shell spheres. We improved the Stöber process that is a traditional method to synthesize the silica nanoshell by using APTMS to modify on the surface of gold nanoparticle. In this way, the Au@SiO2 core-shell structure with silica shell thickness of 20-65 nm has been achieved.

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