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Title: Characterization of high-efficiency solar-cells by their spectral response
Authors: Le, Qn ×
Rodot, M
Nijs, Johan
Ghannam, M
Coppye, J #
Issue Date: Jul-1992
Publisher: Editions physique
Series Title: Journal de physique iii vol:2 issue:7 pages:1305-1316
Abstract: The conversion efficiency of polycrystalline silicon solar cells has been raised to 15.6 % (for an area of 4 cm2), using simple processes to improve the base and the back and front surfaces. Spectral response measurements are presented and analyzed using a classical model, in order to reach the main physical parameters. It is found that the initial gettering procedure designed by Martinuzzi and Sarti raises the electron diffusion length in the base to values well above wafer thickness (180-mu-m); that owing to a p/p+ back junction, the back surface recombination rate is reduced to 10-10(2) cm/s; that owing to the emitter back-etching and passivation the front surface recombination rate is reduced to < 10(4) cm/s. These results explain the high efficiency. Improvement possibilities are discussed.
ISSN: 1155-4320
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - ELECTA, Electrical Energy Computer Architectures
× corresponding author
# (joint) last author

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