Issue 6, 2013

Photoelectrical properties of Ag2S quantum dot-modified TiO2nanorod arrays and their application for photovoltaic devices

Abstract

Vertically aligned TiO2 nanorod arrays (NRAs) modified with Ag2S quantum dots (QDs) have been successfully prepared via a successive ionic layer adsorption and reaction (SILAR) process. Ultraviolet-visible (UV-vis) absorption spectra and surface photovoltage (SPV) measurements reveal that the Ag2S sensitization extends the range of the photoresponse of the TiO2 NRAs to the visible region and exhibits higher photovoltage responses. With a polysulfide electrolyte, a maximum conversion efficiency of 0.148% with a superior Jsc of 1.177 mA cm−2 are obtained after 6 SILAR cycles under illumination at 100 mW cm−2. These results indicate that the Ag2S QDs/TiO2 NRAs photoelectrode has a promising application in solar cells.

Graphical abstract: Photoelectrical properties of Ag2S quantum dot-modified TiO2 nanorod arrays and their application for photovoltaic devices

Supplementary files

Article information

Article type
Paper
Submitted
03 Sep 2012
Accepted
06 Nov 2012
First published
12 Nov 2012

Dalton Trans., 2013,42, 2232-2237

Photoelectrical properties of Ag2S quantum dot-modified TiO2 nanorod arrays and their application for photovoltaic devices

B. Liu, D. Wang, Y. Zhang, H. Fan, Y. Lin, T. Jiang and T. Xie, Dalton Trans., 2013, 42, 2232 DOI: 10.1039/C2DT32031B

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