Effect of internal surface area on the performance of ZnO In2 S3 CuSCN solar cells with extremely thin absorber

D. Kieven, T. Dittrich, Abdelhak Belaidi, J. Tornow, K. Schwarzburg, N. Allsop, M. Lux-Steiner

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Abstract

Solar cells with an extremely thin light absorber were realized by wet chemical preparation on arrays of ZnO nanorods. The absorber consisted of an In2 S3 layer (∼20 nm thickness) and its interface region with a transparent CuSCN hole conductor. By changing the length of the nanorods (0-3.3 μm) and keeping the In2 S3 layer thickness constant at ∼20 nm, the short circuit current increased from about 2-10 mA cm2. A marked increase of the external quantum efficiency at longer wavelengths is attributed to light scattering and a solar energy conversion efficiency of 2.5% has been demonstrated.

Original languageEnglish
Article number153107
JournalApplied Physics Letters
Volume92
Issue number15
DOIs
Publication statusPublished - 2008
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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