Quantum dot-sensitized mesoporous spherical TiO sub(2) paste with cyclic calcination for photoelectrochemical cells

Quantum dot (QD)-sensitized mesoporous (MS) spherical TiO sub(2) paste on fluorine-doped tin oxide was sintered via cyclic calcination (CC), a process of repeating sintering and cooling. This enabled simplification of the sensitization process and yielded uniform, high-quality photoanodes. The CdS a...

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Published inElectrochimica acta Vol. 132; pp. 98 - 102
Main Authors Kong, Eui-Hyun, Chang, Yong-June, Jang, Hyun Myung
Format Journal Article
LanguageEnglish
Published 01.06.2014
Subjects
Cadmium selenides
Calcination
Cooling
Pastes
Photocurrent
Photoelectric effect
Quantum dots
Sintering
Titanium dioxide
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Summary:Quantum dot (QD)-sensitized mesoporous (MS) spherical TiO sub(2) paste on fluorine-doped tin oxide was sintered via cyclic calcination (CC), a process of repeating sintering and cooling. This enabled simplification of the sensitization process and yielded uniform, high-quality photoanodes. The CdS and CdSe QD-sensitized MS TiO sub(2) cells prepared by the proposed CC process showed short-circuit photocurrents (J sub(sc)) of 1.3 and 1.5 mA cm super(-2), respectively. These J sub(sc) values are several times higher than the values reported for other QD/TiO sub(2) hybrid systems. We believe that this chemical and structural methodology will accelerate the commercialization of quantum dot-sensitized solar cells (QDSCs).
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ISSN:0013-4686
DOI:10.1016/j.electacta.2014.03.122