INTERFACE PROPERTIES OF A CDTE-ZNTE HETEROJUNCTION

被引:18
作者
KHAN, MRH
机构
[1] Department of Physics, University of Chittagong, Chittagong
关键词
D O I
10.1088/0022-3727/27/10/031
中图分类号
O59 [应用物理学];
学科分类号
摘要
A vapour phase epitaxial layer of ZnTe was grown on (111), (110) and (100) planes of In-doped n-CdTe substrates. The I-V characteristics of the CdTe-ZnTe heterojunction show that the generation and recombination currents and the diffusion current are controlled by the interface states of the junction. The frequency-dependence and temperature-dependence of the C-V characteristics of the heterojunction were studied. The results show that the band bending is 1.06 eV. The length of the transition region is found to be 0.004 mu m toward the n-CdTe side and 4.81 mu m toward the ZnTe side, which means that the situation is as if an n(+)-p junction had been formed. The interface state density has been found to be 7.5 x 10(13) cm(-3). An attempt was made to draw the complete band diagram of the heterojunction.
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页码:2190 / 2193
页数:4
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