Transparent CdTe solar cells with a ZnO:Al back contact

被引:24
作者
Heisler, C. [1 ]
Schnohr, C. S. [1 ]
Haedrich, M. [1 ]
Oertel, M. [1 ]
Kraft, C. [1 ]
Reisloehner, U. [1 ]
Metzner, H. [1 ]
Wesch, W. [1 ]
机构
[1] Univ Jena, Phys Astron Fak, D-07743 Jena, Germany
关键词
CdTe; Solar cells; Transparent back contact; Tandem solar cell; ZnO:Al; PARAMETERS; ABSORBER; FILMS;
D O I
10.1016/j.tsf.2013.09.087
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In order to realize transparent CdTe solar cells, we reduced the absorber layer thickness to as little as 0.25 mu m using a low-temperature close space sublimation process. Furthermore, we developed a transparent ZnO:Al back contact with a high transmittance of more than 65 % over the whole wavelength range of 400-1300 nm. Thin solar cells with this back contact achieve performances comparable to solar cells with a low-ohmic non-transparent Cu-Au back contact. These beneficial properties suggest the application in a tandem cell configuration. The viability of this concept is demonstrated for a mechanically stacked tandem configuration with CdTe as top filter and CuInSe2 as bottom cell. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:627 / 631
页数:5
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