Upright-standing SnO2 nanowalls: Fabrication, dual-photosensitization and photovoltaic properties

Title
Upright-standing SnO2 nanowalls: Fabrication, dual-photosensitization and photovoltaic properties
Authors
Dipak V. ShindeIseul Lim김창삼이중기Rajaram S. ManeSung-Hwan Han
Keywords
Upright-standing SnO2 nanowalls; Fabrication; dual-photosensitization; photovoltaic properties
Issue Date
2012-07
Publisher
Chemical physics letters
Citation
VOL 542, 66-69
Abstract
We report on fabrication of upright-standing SnO2 nanowalls aligned on FTO substrates by a facile wet chemical method at low temperature. These nanowalls are dual-photosensitized with CdS quantum dots and Z907 dye molecules in order to construct panchromatic dye-sensitized solar cells. We demonstrate that thin CdS quantum dot layer not only acts as a blocking layer preventing recombination of charge carriers, but also contributes as a light absorber. A 158% improvement in power conversion efficiency is observed, which is attributed to improved light absorption, reduced recombination and improved charge collection in presence of CdS quantum dot interlayer.
URI
http://pubs.kist.re.kr/handle/201004/42752
ISSN
00092614
Appears in Collections:
KIST Publication > Article
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