Modified Thornton model for magnetron sputtered zinc oxide:: film structure and etching behaviour

被引:309
作者
Kluth, O [1 ]
Schöpe, G [1 ]
Hüpkes, J [1 ]
Agashe, C [1 ]
Müller, J [1 ]
Rech, B [1 ]
机构
[1] Forschungszentrum Julich, Inst Photovoltaics, D-52425 Julich, Germany
关键词
etching; sputtering; surface morphology; zinc oxide;
D O I
10.1016/S0040-6090(03)00949-0
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
ZnO:Al films were prepared on glass substrates with different sputter techniques from ceramic ZnO:Al(2)O(3) target as well as metallic Zn:Al targets using a wide range of deposition parameters. Independent of the sputter technique, sputter pressure and substrate temperature were found to have a major influence on the electrical and structural properties of the ZnO:Al films. With an increasing deposition pressure, we observed a strong decrease in the carrier mobility and also an increase of the etching rate. The surface morphology obtAlned after etching of RF sputtered ZnO:Al systematically changes from crater-like to hill-like surface appearance with increasing pressure. The correlation of sputter parameters, film growth and structural properties is discussed in terms of a modified Thornton model. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:80 / 85
页数:6
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