CdSe Quantum Dots and N719‐Dye Decorated Hierarchical TiO 2 Nanorods for the Construction of Efficient Co‐Sensitized Solar Cells

Abstract Three‐dimensional hierarchical TiO 2 nanorods (HTNs) decorated with the N719 dye and 3‐mercaptopropionic or oleic acid capped CdSe quantum dots (QDs) in photoanodes for the construction of TiO 2 nanorod‐based efficient co‐sensitized solar cells are reported. These HTN co‐sensitized solar ce...

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Bibliographic Details
Published inChemphyschem Vol. 16; no. 12; pp. 2543 - 2548
Main Authors Subramaniam, Mohan Raj, Kumaresan, Duraisamy
Format Journal Article
LanguageEnglish
Published 24.08.2015
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Summary:Abstract Three‐dimensional hierarchical TiO 2 nanorods (HTNs) decorated with the N719 dye and 3‐mercaptopropionic or oleic acid capped CdSe quantum dots (QDs) in photoanodes for the construction of TiO 2 nanorod‐based efficient co‐sensitized solar cells are reported. These HTN co‐sensitized solar cells showed a maximum power‐conversion efficiency of 3.93 %, and a higher open‐circuit voltage and fill factor for the photoanode with 3‐mercaptopropionic acid capped CdSe QDs due to the strong electronic interactions between CdSe QDs, N719 dye and HTNs, and the superior light‐harvesting features of the HTNs. An electrochemical impedance analysis indicated that the superior charge‐collection efficiency and electron diffusion length of the CdSe QD‐coated HTNs improved the photovoltaic performance of these HTN co‐sensitized solar cells.
ISSN:1439-4235
1439-7641
DOI:10.1002/cphc.201500440