Plasmon-Enhanced Surface Photovoltage of ZnO/Ag Nanogratings

被引：16

作者：

Gwon, Minji ^{[1
]}

Sohn, Ahrum ^{[1
]}

Cho, Yunae ^{[1
]}

Phark, Soo-Hyon ^{[2
,3
]}

Ko, Jieun ^{[4
]}

Kim, Youn Sang ^{[4
,5
]}

Kim, Dong-Wook ^{[1
]}

机构：

[1] Ewha Womans Univ, Dept Phys, Seoul 120750, South Korea

[2] Inst Basic Sci IBS, Ctr Correlated Electron Syst, Seoul 151747, South Korea

[3] Seoul Natl Univ, Dept Phys & Astron, Seoul 151742, South Korea

[4] Seoul Natl Univ, Grad Sch Convergence Sci & Technol, Program Nano Sci & Technol, Seoul 151742, South Korea

[5] Adv Inst Convergence Technol, Suwon 443270, Gyeonggi Do, South Korea

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

基金：

新加坡国家研究基金会;

关键词：

LIGHT-EMISSION; FILMS;

D O I：

10.1038/srep16727

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We investigated the surface photovoltage (SPV) behaviors of ZnO/Ag one-dimensional (1D) nanogratings using Kelvin probe force microscopy (KPFM). The grating structure could couple surface plasmon polaritons (SPPs) with photons, giving rise to strong light confinement at the ZnO/Ag interface. The larger field produced more photo-excited carriers and increased the SPV. SPP excitation influenced the spatial distribution of the photo-excited carriers and their recombination processes. As a result, the SPV relaxation time clearly depended on the wavelength and polarization of the incident light. All of these results suggested that SPV measurement using KPFM should be very useful for studying the plasmonic effects in nanoscale metal/semiconductor hybrid structures.

引用

页数：7

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