Optical Field Confinement Enhanced Single ZnO Microrod UV Photodetector

ZnO microrods are synthesized using the vapor phase transport method, and the magnetron sputtering is used to decorate the A1 nanoparticles （NPs） on a single ZnO microrod. The micro-PL and I-V responses are measured before and after the decoration orAl NPs. The FDTD stimulation is also carried out t...

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Bibliographic Details
Published inChinese physics letters Vol. 34; no. 7; pp. 283 - 286
Main Author 魏铭 徐春祥 秦飞飞 Arumugam Gowri Manohari 卢俊峰 祝秋香
Format Journal Article
LanguageEnglish
Published 01.06.2017
Subjects
ZnO纳米粒子
光场分布
局域
柱状
气相转移法
紫外探测器
表面等离子体
表面装饰
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/34/7/078503

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Summary:ZnO microrods are synthesized using the vapor phase transport method, and the magnetron sputtering is used to decorate the A1 nanoparticles （NPs） on a single ZnO microrod. The micro-PL and I-V responses are measured before and after the decoration orAl NPs. The FDTD stimulation is also carried out to demonstrate the optical field distribution around the decoration of Al NPs on the surface of a ZnO microrod. Due to an implementation of AI NPs, the ZnO microrod exhibits an improved photoresponse behavior. In addition, AI NPs induced localized surface plasmons （LSPs） as well as improved optical field confinement can be ascribed to an enhancement of ultraviolet （UV） response. This research provides a method for improving the responsivity of photodetectors.
Bibliography:11-1959/O4
ZnO microrods are synthesized using the vapor phase transport method, and the magnetron sputtering is used to decorate the A1 nanoparticles （NPs） on a single ZnO microrod. The micro-PL and I-V responses are measured before and after the decoration orAl NPs. The FDTD stimulation is also carried out to demonstrate the optical field distribution around the decoration of Al NPs on the surface of a ZnO microrod. Due to an implementation of AI NPs, the ZnO microrod exhibits an improved photoresponse behavior. In addition, AI NPs induced localized surface plasmons （LSPs） as well as improved optical field confinement can be ascribed to an enhancement of ultraviolet （UV） response. This research provides a method for improving the responsivity of photodetectors.
Ming Wei, Chun-Xiang Xu,Fei-Fei Qin,Arumugam Gowri Manohari Jun-Feng Lu, Qiu-Xiang Zhu（ State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096）
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/34/7/078503