期刊
THIN SOLID FILMS
卷 361, 期 -, 页码 298-302出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0040-6090(99)00762-2
关键词
CuInSe2; CuGaSe2; solar cells; recombination; tunneling
This article discusses the fundamental limitations imposed on Cu(In,Ga)Se-2 based heterostructure solar cells by recombination in the bulk of the absorber and at the interface between the absorber and the CdS buffer layer. Bulk recombination to a certain extent can be minimized by increasing the doping density up to a limit where tunneling currents significantly enhance recombination. We propose simple schemes for the analysis of experimentally gained data. By comparison of theoretical models with experimental data we show that tunneling plays a role for polycrystalline Cu(In,Ga)Se-2 in some cases and for CuGaSe2 in general. (C) 2000 Elsevier Science S.A. All rights reserved.
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