Oxide removal from GaN(0001) surfaces

被引:13
|
作者
Schulz, Ch [1 ]
Schmidt, Th [1 ]
Flege, J. I. [1 ]
Berner, N. [1 ]
Tessarek, Ch [1 ]
Hommel, D. [1 ]
Falta, J. [1 ]
机构
[1] Univ Bremen, Inst Solid State Phys, D-28359 Bremen, Germany
关键词
GAN; PHOTOEMISSION;
D O I
10.1002/pssc.200880845
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
X-ray photoelectron spectroscopy has been used to study two different two-step cleaning methods of MOVPE grown GaN(0001). Carbon and oxygen were identified as the major contaminants, even though the samples were stored in a glove box after growth and transferred under nitrogen atmosphere. By thermal annealing of the samples a significant oxygen decrease and a complete removal of the carbon was achieved. To remove the residual oxygen, subsequently Ga deposition/re-desorption cycles and N-plasma treatment were performed. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码:S305 / S308
页数:4
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