Plasmon-Enhanced Surface Photovoltage of ZnO/Ag Nanogratings
- 등재 SCIE, SCOPUS
- 발행기관 Nature Publishing Group
- 발행년도 2015
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000120461
- 본문언어 영어
- Published As http://dx.doi.org/10.1038/srep16727
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
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. © 2015, Nature Publishing Group. All rights reserved.
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