Microcrystalline silicon and 'micromorph' tandem solar cells

被引:116
|
作者
Shah, A [1 ]
Meier, J [1 ]
Vallat-Sauvain, E [1 ]
Droz, C [1 ]
Kroll, U [1 ]
Wyrsch, N [1 ]
Guillet, J [1 ]
Graf, U [1 ]
机构
[1] Univ Neuchatel, Inst Microtechnol, CH-2000 Neuchatel, Switzerland
关键词
thin-film silicon; photovoltaic solar cells; c-Si : H layers; micromorph;
D O I
10.1016/S0040-6090(01)01658-3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The case for thin-film silicon as one of the main future options for cost-effective photovoltaic solar cells is outlined. The limitations of present amorphous silicon (a-Si:H) solar cells are briefly mentioned. Hydrogenated microcrystalline silicon (muc-Si:H) deposited by PECVD (plasma-enhanced chemical vapor deposition) at low substrate temperatures (approx. 200 degreesC) constitutes a new and additional possibility for solar cells. Properties of intrinsic muc-Si:H layers deposited by PECVD at VHF (very high frequency) excitation frequencies are listed, together with the necessary conditions for obtaining device-grade material. Performances obtained so far with muc-Si:H solar cells are given: the latter are compared with estimated limits for pn- and pin-type devices with E-g = 1.1 eV, Finally, present performances and future perspectives for 'micromorph' (muc-Si:H/a-Si:H) tandem solar cells are discussed. (C) 2002 Elsevier Science B.V All rights reserved.
引用
收藏
页码:179 / 187
页数:9
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