Optical properties of Hg1-xCdxTe/CdTe epitaxial films with graded band gap

被引：0
|
作者：
Ivasiv, ZF [1 ]
Tetyorkin, VV [1 ]
Sizov, FF [1 ]
Petryakov, VA [1 ]
机构：
[1] Inst Semicond Phys, UA-252650 Kiev, Ukraine
来源：
FOURTH INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE AND MATERIAL PROPERTIES FOR INFRARED OPTOELECTRONICS | 1999年 / 3890卷
关键词：
epitaxial films; infrared transmission; composition gradient;
D O I：
10.1117/12.368334
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The infrared transmission spectra of HgCdTe epitaxial films grown on CdTe substrates were measured. The films investigated contain an exponential composition gradient. Optical density D vs the photon energy omega are analyzed both theoretically and experimentally. Theoretical calculations of D( omega) spectra were performed in the framework of the WKB approximation. The composition profile has been obtained from the fitting procedure. In order to reduce the total amount of the fitting parameters as well as to improve the accuracy of this procedure the differentiation of the D( omega) curves were performed.
引用
收藏
页码：82 / 86
页数：5
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