Highly efficient CdS-quantum-dot-sensitized GaAs solar cells

We demonstrate a hybrid design of traditional GaAs-based solar cell combined with colloidal CdS quantum dots. With anti-reflective feature at long wavelength and down-conversion at UV regime, the CdS quantum dot effectively enhance the overall power conversion efficiency by as high as 18.9% compared...

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Bibliographic Details
Published in:Optics express 2012-03, Vol.20 Suppl 2 (S2), p.A319-A326
Main Authors: Lin, Chien-Chung, Chen, Hsin-Chu, Tsai, Yu Lin, Han, Hau-Vei, Shih, Huai-Shiang, Chang, Yi-An, Kuo, Hao-Chung, Yu, Peichen
Format: Article
Language:English
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Summary:We demonstrate a hybrid design of traditional GaAs-based solar cell combined with colloidal CdS quantum dots. With anti-reflective feature at long wavelength and down-conversion at UV regime, the CdS quantum dot effectively enhance the overall power conversion efficiency by as high as 18.9% compared to traditional GaAs-based device. A more detailed study showed an increase of surface photoconductivity due to UV presence, and the fill factor of the solar cell can be improved accordingly.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.00A319