Cathodoluminescence study of plastically deformed bulk ZnO single crystal

被引：23

作者：

Takkouk, Z ^{[1
]}

Brihi, N

Guergouri, K

Marfaing, Y

机构：

[1] Univ Mentouri, Fac Sci, Dept Phys, Lab Phys Chim Semicond, Constantine 250001, Algeria

[2] CNRS, Lab Phys Solides & Crystallogenese, F-92195 Meudon, France

来源：

PHYSICA B-CONDENSED MATTER | 2005年 / 366卷 / 1-4期

关键词：

n-ZnO; dislocations; cathodoluminescence; plastic deformation; II-VI semiconductors;

D O I：

10.1016/j.physb.2005.05.027

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Vickers microindentation of bulk (0 0 0 (1) over bar) ZnO single crystal has been studied by means of a scanning microscope using cathodoluminescence (CL) monochromatic imaging and spectral modes. A main feature of the sample's deformation is the propagation of the latter away from the indenter contact diameter, in well-defined directions, characterizing the hexagonal crystal systems. An attempt is made to understand plastic deformation mechanism, which is responsible for the observed deformation behavior. The deformation-produced dislocations act as nonradiative recombination centers, which is confirmed by the absence of any additional emission band and the diminution of the band edge luminescence intensity in the Cl spectra after micro-indentation. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：185 / 191

页数：7

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