TiO2 inverse opal based CdS/CdSe quantum dot co-sensitized solar cells

CdS and CdSe quantum dots were introduced as co-sensitizers into TiO 2 inverse opal quantum dot sensitized solar cells. Herein, the three-dimensionally ordered porous TiO 2 inverse opal film leads to a better infiltration of both sensitizers and hole transporting material, and the smaller surface ar...

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Bibliographic Details
Published inJournal of materials science. Materials in electronics Vol. 25; no. 7; pp. 3039 - 3043
Main Authors Xiong, Yan, Deng, Fei, Wang, Lei, Liu, Yanshan
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.07.2014
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Materials Science
Optical and Electronic Materials
Porous TiO2
Solar Cell
Selenosulphate
TiO2 Film
TiO2
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Summary:CdS and CdSe quantum dots were introduced as co-sensitizers into TiO 2 inverse opal quantum dot sensitized solar cells. Herein, the three-dimensionally ordered porous TiO 2 inverse opal film leads to a better infiltration of both sensitizers and hole transporting material, and the smaller surface area of TiO 2 inverse opal film is effectively offset by the incorporating of co-sensitization. It was found that the presence of CdS/CdSe co-sensitizers provides enhanced light absorption, and leads to a lower recombination rate of the electrons due to the stepwise structure of band edge in TiO 2 /CdS/CdSe, which resulted in the observed enhanced photocurrent and energy conversion efficiency of the solar cells. A cell efficiency of 1.01 % has been attained.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-014-1980-5