Advantages of transparent conducting oxide thin films with controlled permittivity for thin film photovoltaic solar cells

被引:28
作者
Gessert, T. A. [1 ]
Burst, J. [1 ]
Li, X. [1 ]
Scott, M. [1 ]
Coutts, T. J. [1 ]
机构
[1] Natl Renewable Energy Lab, Golden, CO 80401 USA
关键词
Transparent conducting oxides; CdTe thin film photovoltaic solar cells;
D O I
10.1016/j.tsf.2011.01.143
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Our recent investigations have identified a pathway to produce transparent conducting oxide (TCO) films that demonstrate higher infrared transparency. The technique involves controlling the dielectric permittivity of the TCO film such that the electrical properties are maintained, but the plasma frequency (omega(p)) is shifted to longer wavelength. This has the effect of reducing free-carrier absorption in the visible and near-infrared spectral region, thus producing a TCO film with higher optical transmission. The technique has been demonstrated for sputtered films of indium tin oxide by adding small amounts of ZrO2 to a ceramic sputtering target, and for SnO2:F films deposited by chemical vapor deposition using a metalorganic Zr source. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:7146 / 7148
页数:3
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