Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 299, Issue -, Pages 1152-1156Publisher
ELSEVIER
DOI: 10.1016/S0022-3093(01)01083-3
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Thin film polycrystalline silicon (poly-Si) solar cells have been fabricated by plasma enhanced chemical vapor deposition on differently textured ZnO/Ag/SnO2/glass substrates. Using a textured substrate with the root mean square (RMS) roughness (sigma) of 38 nm. the conversion efficiency of 8.22% has been achieved due to improvement of long wavelength responses. Whereas using textured substrates with sigma > 38 nm. (220) preferential growth is deteriorated, yielding decreases in both short circuit current and open circuit voltage. The field-dependent carrier collection behaviors reveal that the carrier diffusion length in the poly-Si layer on textured substrates with sigma > 38 nm decreases due to the change in poly-Si microstructure. (C) 2002 Elsevier Science B.V. All rights reserved.
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