Contacts to a solar cell with extremely thin CdTe absorber

被引:58
作者
Ernst, K [1 ]
Engelhardt, R [1 ]
Ellmer, K [1 ]
Kelch, C [1 ]
Muffler, HJ [1 ]
Lux-Steiner, MC [1 ]
Könenkamp, R [1 ]
机构
[1] Hahn Meitner Inst Kernforsch Berlin GmbH, D-14109 Berlin, Germany
关键词
CdTe; electrodeposition; porous TiO2; eta-solar cell;
D O I
10.1016/S0040-6090(00)01731-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The concept for a solar cell with extremely thin absorber (eta-cell) comprises a porous TiO2 substrate covered by a CdTe film with a local thickness of 150-250 nm. At the present stage of development this type of cell exhibits a photovoltage between 600 and 700 mV and a photocurrent of 5-9 mA/cm(2) under AM1.5 illumination, indicating the feasibility of the concept. The fill factor is, however. only in the range of 20%, due to a strong voltage-dependence of the photocurrent. This paper discusses the influence of the front and back contacts on the limited cell performance and shows that the insertion of a buffer layer at the front contact gives an improved fill-factor. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:26 / 28
页数:3
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