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Title: Correlation of the plasmon-enhanced photoconductance and photovoltaic properties of core-shell Au@TiO{sub 2} network

Abstract

This study reveals the contribution of hot electrons from the excited plasmonic nanoparticles in dye sensitized solar cells (DSSCs) by correlating the photoconductance of a core-shell Au@TiO{sub 2} network on a micro-gap electrode and the photovolatic properties of this material as photoanodes in DSSCs. The distinct wavelength dependence of these two devices reveals that the plasmon-excited hot electrons can easily overcome the Schottky barrier at Au/TiO{sub 2} interface in the whole visible wavelength range and transfer from Au nanoparticles into the TiO{sub 2} network. The enhanced charge carrier density leads to higher photoconductance and facilitates more efficient charge separation and photoelectron collection in the DSSCs.

Authors:
 [1];  [2];  [1];  [3]
  1. Department of Chemistry, Kansas State University, Manhattan, Kansas 66506 (United States)
  2. Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045 (United States)
  3. (China)
Publication Date:
OSTI Identifier:
22590492
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 9; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; INTERFACES; NANOPARTICLES; PHOTOANODES; PHOTOCONDUCTIVITY; PHOTOVOLTAIC EFFECT; PLASMONS; SOLAR CELLS; TITANIUM OXIDES

Citation Formats

Yang, Yiqun, Wu, Judy, Li, Jun, E-mail: junli@ksu.edu, and College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, Hubei 435002. Correlation of the plasmon-enhanced photoconductance and photovoltaic properties of core-shell Au@TiO{sub 2} network. United States: N. p., 2016. Web. doi:10.1063/1.4961884.
Yang, Yiqun, Wu, Judy, Li, Jun, E-mail: junli@ksu.edu, & College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, Hubei 435002. Correlation of the plasmon-enhanced photoconductance and photovoltaic properties of core-shell Au@TiO{sub 2} network. United States. doi:10.1063/1.4961884.
Yang, Yiqun, Wu, Judy, Li, Jun, E-mail: junli@ksu.edu, and College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, Hubei 435002. Mon . "Correlation of the plasmon-enhanced photoconductance and photovoltaic properties of core-shell Au@TiO{sub 2} network". United States. doi:10.1063/1.4961884.
@article{osti_22590492,
title = {Correlation of the plasmon-enhanced photoconductance and photovoltaic properties of core-shell Au@TiO{sub 2} network},
author = {Yang, Yiqun and Wu, Judy and Li, Jun, E-mail: junli@ksu.edu and College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, Hubei 435002},
abstractNote = {This study reveals the contribution of hot electrons from the excited plasmonic nanoparticles in dye sensitized solar cells (DSSCs) by correlating the photoconductance of a core-shell Au@TiO{sub 2} network on a micro-gap electrode and the photovolatic properties of this material as photoanodes in DSSCs. The distinct wavelength dependence of these two devices reveals that the plasmon-excited hot electrons can easily overcome the Schottky barrier at Au/TiO{sub 2} interface in the whole visible wavelength range and transfer from Au nanoparticles into the TiO{sub 2} network. The enhanced charge carrier density leads to higher photoconductance and facilitates more efficient charge separation and photoelectron collection in the DSSCs.},
doi = {10.1063/1.4961884},
journal = {Applied Physics Letters},
number = 9,
volume = 109,
place = {United States},
year = {Mon Aug 29 00:00:00 EDT 2016},
month = {Mon Aug 29 00:00:00 EDT 2016}
}