Silicon-doping induced strain of AIN layers: a comparative luminescence and Raman study

被引:15
|
作者
Prinz, Guenther M. [1 ]
Feneberg, Martin [1 ]
Schirra, Martin [1 ]
Sauer, Rolf [1 ]
Thonke, Klaus [1 ]
Thapa, Sarad B. [2 ]
Scholz, Ferdinand [2 ]
机构
[1] Univ Ulm, Inst Halbleiterphys, D-89069 Ulm, Germany
[2] Univ Ulm, Inst Optoelekt, D-89069 Ulm, Germany
来源
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D O I
10.1002/pssr.200802155
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Si-doped aluminum nitride layers show a shift of the nearband-edge luminescence at around 6 eV to lower energies for increasing Si concentration up to approximate to(1 - 3) x 10(19) cm(-3). For higher concentrations, the luminescence shifts back to higher energies. This behavior is compared to concomitant shifts of the Raman active E-2 vibrational mode and to X-ray diffraction data. It can be explained in terms of increasing tensile strain which finally to the formation of cracks. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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页码:215 / 217
页数:3
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