Plasmon-Enhanced Surface Photovoltage of ZnO/Ag Nanogratings

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 lar...

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Published in:Scientific reports 2015-11, Vol.5 (1), p.16727-16727, Article 16727
Main Authors: Gwon, Minji, Sohn, Ahrum, Cho, Yunae, Phark, Soo-Hyon, Ko, Jieun, Sang Kim, Youn, Kim, Dong-Wook
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Language:English
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639/624/400/1021
639/925/357/995
Energy
Grain boundaries
Humanities and Social Sciences
Lasers
Microscopy
multidisciplinary
Photons
Polarization
Recombination
Science
Spatial distribution
Spectrum analysis
Thin films
Topography
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cited_by cdi_FETCH-LOGICAL-c504t-eac8373e3af9b762ed327a498ea65a9bc484740907dfbcf07d2cf1115796d5213
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container_title Scientific reports
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creator Gwon, Minji
Sohn, Ahrum
Cho, Yunae
Phark, Soo-Hyon
Ko, Jieun
Sang Kim, Youn
Kim, Dong-Wook
description 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.
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subjects 639/624/400/1021
639/925/357/995
Energy
Grain boundaries
Humanities and Social Sciences
Lasers
Microscopy
multidisciplinary
Photons
Polarization
Recombination
Science
Spatial distribution
Spectrum analysis
Thin films
Topography
title Plasmon-Enhanced Surface Photovoltage of ZnO/Ag Nanogratings
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