An oleic acid-capped CdSe quantum-dot sensitized solar cell.

Authors :: Jing Chen
Song, J. L.
Sun, X. W.
Deng, W. Q.
Jiang, C. Y.
Lei, W.
Huang, J. H.
Liu, R. S.
Source :: Applied Physics Letters; 4/13/2009, Vol. 94 Issue 15, p153115, 3p, 3 Graphs
Publication Year :: 2009
Abstract: In this letter, we report an oleic acid (OA)-capped CdSe quantum-dot sensitized solar cell (QDSSC) with an improved performance. The TiO<subscript>2</subscript>/OA-CdSe photoanode in a two-electrode device exhibited a photon-to-current conversion efficiency of 17.5% at 400 nm. At AM1.5G irradiation with 100 mW/cm<superscript>2</superscript> light intensity, the QDSSCs based on OA-capped CdSe showed a power conversion efficiency of about 1%. The function of OA was to increase QD loading, extend the absorption range and possibly suppress the surface recombination. [ABSTRACT FROM AUTHOR]