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Plasmonic Photocurrent Enhancement in Silicon-on-Insulator Devices Due to Colloidal Silver Nanoparticles

Published online by Cambridge University Press:  17 April 2019

Birol Ozturk ,
Eric A. Schiff ,
Hui Zhao ,
Fehmi Damkaci ,
Baojie Yan ,
Jeff Yang  and
Subhendu Guha
Birol Ozturk
Affiliation:
Department of Physics, Syracuse University, Syracuse, New York 13244, U.S.A.
Eric A. Schiff
Affiliation:
Department of Physics, Syracuse University, Syracuse, New York 13244, U.S.A.
Hui Zhao
Affiliation:
Department of Physics, Syracuse University, Syracuse, New York 13244, U.S.A.
Fehmi Damkaci
Affiliation:
Department of Chemistry, SUNY Oswego, Oswego, New York 13126, U.S.A.
Baojie Yan
Affiliation:
United Solar Ovonic LLC, Troy, Michigan 48084, U.S.A.
Jeff Yang
Affiliation:
United Solar Ovonic LLC, Troy, Michigan 48084, U.S.A.
Subhendu Guha
Affiliation:
United Solar Ovonic LLC, Troy, Michigan 48084, U.S.A.
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Abstract

A layer of silver nanoparticles created by thermal annealing of evaporated silver films can increase the photocurrents in silicon-on-insulator (SOI) devices by fivefold or more, but significant enhancements have been restricted to wavelengths greater than 800 nm. Here we report a significant enhancement of photoconductance at shorter wavelengths (500-750 nm) by using a monolayer of silver nanoparticles transferred from a colloidal suspension. Photocurrents on SOI increased in the 500-750 nm spectral range with the addition of silver nanoparticles, with enhancements more than two times; enhancements at longer wavelengths were small, in contrast to results with annealed silver films. We prepared similar colloidal silver nanoparticle monolayers layers on nanocrystalline silicon solar cells with conducting oxide top layers. There is an overall decrease in the quantum efficiency of these cells with the deposition of silver nanoparticles. We attribute these effects to the substantial substrate-mediated changes in the localized surface plasmon resonance frequencies of the differing nanoparticle configurations.

Keywords

photovoltaicnanostructurecolloid
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1248: Symposium D – Solution Processing of Inorganic and Hybrid Materials for Electronics and Photonics , 2010 , 1248-D11-13
Copyright
Copyright © Materials Research Society 2010

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