TEM study on defects in epitaxial CdZnTe films deposited on (001)GaAs by close-spaced sublimation

Junning Gao, Wanqi Jie, Lin Luo, Yanyan Yuan, Tao Wang, Shouzhi Xi, Hui Yu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

A transmission electron microscopy (TEM) study on defects in a 30 μm-thick epitaxial CZT film deposited on (001)GaAs via close-spaced sublimation was performed. The epi-layer is of good quality without twins. Dislocations and stacking faults are mainly gathered near the interface. The dislocations are extrinsic either of Lomer edge or 60° type. Pseudo extrinsic stacking faults consisting of two independent and oppositely oriented extrinsic dislocations have. been found both on the (111) and the (111) planes, L-shaped defects originated from the interface have been discovered. The near-interface-side of L is consisted of 3 compressed (111) planes and the lateral side is consisted of 3-4 misarranged (111) planes. This L-shaped defect is induced by the absence of a misfit dislocation at the intersection between L and the interface.

Original languageEnglish
Title of host publicationReliability and Materials Issues of III-V and II-VI Semiconductor Optical and Electron Devices and Materials II
Pages85-90
Number of pages6
DOIs
StatePublished - 2012
Event2012 MRS Spring Meeting - San Francisco, CA, United States
Duration: 9 Apr 201213 Apr 2012

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1432
ISSN (Print)0272-9172

Conference

Conference2012 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA
Period9/04/1213/04/12

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