CuGaSe2 solar cells prepared by MOVPE

被引:15
作者
Siebentritt, S [1 ]
Bauknecht, A [1 ]
Gerhard, A [1 ]
Fiedeler, U [1 ]
Kampschulte, T [1 ]
Schuler, S [1 ]
Harneit, W [1 ]
Brehme, S [1 ]
Albert, J [1 ]
机构
[1] Hahn Meitner Inst Kernforsch Berlin GmbH, D-14109 Berlin, Germany
关键词
CuGaSe2; conductivity; mobility; solar cells;
D O I
10.1016/S0927-0248(00)00272-5
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Metal organic vapor-phase epitaxy (MOVPE) is used to prepare epitaxial reference films and solar cells based on CuGaSe2. Room temperature Hall measurements are performed on epitaxial CuGaSe2. Conductivities up to 0.7(Omega cm)(-1) were obtained. Highest mobilities of 270cm(2)/Vs are observed for near stoichiometric slightly Ga-rich films. Net charge carrier concentration is higher in the Cu-rich grown films than in the Ga-rich films. Solar cells with epitaxial absorber are prepared that reach efficiencies of 3.3%. First polycrystalline solar cells are grown on Mo/glass at reduced substrate temperatures. Under AM1.5 illumination open-circuit voltages up to 740mV and efficiencies of 2.0% are obtained. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:129 / 136
页数:8
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