Effect of Coating Layer Thickness on the Electron Injection Efficiency and Electron Lifetime in Dye-sensitized Solar Cells

doi:10.7503/cjcu20130071

Abstract

Abstract:

Sm₂O₃ was coated into the TiO₂ films by a dipping method, and Sm₂O₃ with thickness no more than 2 nm was obtained. The effects of thickness of Sm₂O₃ coating layer on the electron injection process and the electron recombination of dye-sensitized solar cells(DSC) were investigated. The results indicate that the electron injection efficiency decreases obviously in the thicker Sm₂O₃ coating films, while electrons have longer lifetime in the thicker coating film. As a result, the thicker coating thickness is, the lower conversion efficiency of DSC is. And the present research works indicate that the coating thickness of Sm₂O₃ layer within 0.4 nm is suitable for dye-sensitized solar cells.

Key words: Electron injection, Electron recombination, Samarium oxide, Dye-sensitized solar cell

CLC Number:

O649

TrendMD:

HU Lin-Hua, MO Li-E, LI Wen-Xin, DING Yong, DAI Song-Yuan. Effect of Coating Layer Thickness on the Electron Injection Efficiency and Electron Lifetime in Dye-sensitized Solar Cells[J]. Chem. J. Chinese Universities, 2013, 34(9): 2196.

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