Manifestation of CdTe quantum dots and interdiffusion in IR reflection spectra of CdTe/ZnTe structures with quantum dots

被引：0
|
作者：
I. V. Kucherenko
V. S. Vinogradov
G. Karczewski
N. N. Novikova
M. Cestelli Guidi
M. Piccinini
机构：
[1] Russian Academy of Sciences,Lebedev Physical Institute
[2] Polish Academy of Sciences,Institute of Physics
[3] Russian Academy of Sciences,Institute of Spectroscopy
[4] National Institute of Nuclear Physics,Frascati National Laboratory
来源：
Physics of the Solid State | 2007年 / 49卷
关键词：
78.67.Hc; 78.40.Fy;
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摘要：
The IR reflection spectra of structures that consist of alternating layers of CdTe quantum dots and ZnTe barriers and are grown on ZnTe and CdTe/ZnTe buffer layers on GaAs(001) substrates are studied. The spectra are processed using dispersion analysis, and the parameters of the oscillators are determined. In the spectra, quantum dots manifest themselves in the form of a broad band at a frequency close to the frequency of the Fröhlich mode. It is revealed that the spectra contain features associated with the interdiffusion of the CdTe and ZnTe compounds, i.e., bands attributed to the local mode of Zn atoms in the CdTe compound and two gap modes of Cd atoms in the ZnTe compound.
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页码：1563 / 1566
页数：3
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