High rate direct current magnetron sputtered and texture-etched zinc oxide films for silicon thin film solar cells

被引:48
作者
Tohsophon, T. [1 ,2 ]
Huepkes, J. [2 ]
Siekmann, H. [2 ]
Rech, B. [2 ]
Schultheis, M.
Sirikulrat, N. [3 ]
机构
[1] Srinakharinwirot Univ, Fac Sci, Dept Phys, Bangkok 10110, Thailand
[2] Forschungszentrum Julich, Inst Photovolta, D-52425 Julich, Germany
[3] Chiang Mai Univ, Fac Sci, Dept Phys, Chiang Mai 50200, Thailand
关键词
sputtering; aluminum-doped zinc oxide; ceramic target; solar cells;
D O I
10.1016/j.tsf.2007.06.061
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Aluminum-doped zinc oxide (AZO) films were prepared by in-line direct current (dc) magnetron sputtering on glass substrates. Four types of ceramic targets with 0.5 wt.% or 1 wt.% of aluminum oxide and different preparation methods, namely normal sintered, soft sintered and hot pressed, were employed. The influence of different target manufacturing processes, aluminum concentration and sputtering conditions on AZO films were investigated. Depending on the type of targets and deposition conditions, highly transparent films with low resistivity values in the range of 3.6-11 x 10(-4) Omega cm were obtained. The etching behaviour in hydrochloric acid and the resulting light scattering properties of the AZO films were strongly influenced by the choice of the target and the deposition conditions. The most favourable films have been successfuily applied in thin film solar cells with 1.1-mu m microcrystalline silicon absorber layer leading to an initial efficiency of 7.8%. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:4628 / 4632
页数:5
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