Large-grained polycrystalline silicon on grlass for thin-film solar cells

被引:69
作者
Gall, S.
Schneider, J.
Klein, J.
Huebener, K.
Muske, M.
Rau, B.
Conrad, E.
Sieber, I.
Petter, K.
Lips, K.
Stöger-Pollach, M.
Schattschneider, P.
Fuhs, W.
机构
[1] Hahn Meitner Inst Berlin GmbH, D-12489 Berlin, Germany
[2] Vienna Univ Technol, A-1040 Vienna, Austria
关键词
aluminium; chemical vapor deposition (CVD); crystallization; epitaxy;
D O I
10.1016/j.tsf.2005.12.067
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have investigated the formation of large-grained polycrystalline silicon (poly-Si) films on glass for thin-film solar cells using the 'seed layer concept' which is based on the epitaxial thickening of a thin large-grained poly-Si template (seed layer). Due to the glass substrate all process steps are limited to a temperature of about 600 degrees C. The aluminium-induced layer exchange (ALILE) process based on the aluminium-induced crystallisation (AIC) of amorphous Si has been used to prepare p(+)-type seed layers featuring large grains and a high preferential (100) orientation of the surface. The seed layers have been thickened by electron cyclotron resonance chemical vapour deposition (ECRCVD) to form the p-type absorber of the solar cell. First poly-Si thin-film solar cell structures have been prepared by deposition of an n(+)-type a-Si: H emitter. So far an open circuit voltage of 284 mV has been reached without any additional treatments like defect annealing and defect passivation. (c) 2005 Elsevier B.V All rights reserved.
引用
收藏
页码:7 / 14
页数:8
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