Preparation and optical properties of Co-doped ZnSe single crystals

被引：11
|
作者：
Vaksman, Yu. F.
Pavlov, V. V.
Nitsuk, Yu. A.
Purtov, Yu. N.
Nasibov, A. S.
Shapkin, P. V.
机构：
[1] Mechnikov Natl Univ, UA-65026 Odessa, Ukraine
[2] Russian Acad Sci, Lebedev Inst Phys, Moscow 117924, Russia
来源：
SEMICONDUCTORS | 2006年 / 40卷 / 07期
关键词：
D O I：
10.1134/S1063782606070104
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
ZnSe single crystals doped via Co diffusion are investigated. The diffusion was carried out from metal Co in He or Ar atmosphere. The spectra of optical density in the wavelength range 0.4-2 mu m are investigated. It is found that the absorption edge shifts as the concentration of doping impurities increases. This shift is caused by the formation of the Zn1 - x CoxSe alloy. The diffusion profile of the Co dopant is determined via measurement of the relative optical density of the crystals in the visible spectral region. The Co diffusivities (D) in the ZnSe crystals at T = 1103-1273 K are calculated. The analysis of the temperature dependence D(T) made it possible to determine the coefficients in the Arrhenius equation, namely, D (0) = 3.4 x 10(6) cm(2)/s and E (0) = 3.8 eV.
引用
收藏
页码：794 / 797
页数：4
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