共 17 条
Physical properties of vacuum evaporated CdTe thin films with post-deposition thermal annealing
被引:43
作者:

Chander, Subhash
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机构:
Mohanlal Sukhadia Univ, Dept Phys, Udaipur 313001, India Mohanlal Sukhadia Univ, Dept Phys, Udaipur 313001, India

Dhaka, M. S.
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Mohanlal Sukhadia Univ, Dept Phys, Udaipur 313001, India Mohanlal Sukhadia Univ, Dept Phys, Udaipur 313001, India
机构:
[1] Mohanlal Sukhadia Univ, Dept Phys, Udaipur 313001, India
关键词:
CdTc thin films;
Physical properties;
Thermal annealing;
Vacuum evaporation;
Characterization;
DEPOSITION;
GROWTH;
D O I:
10.1016/j.physe.2015.05.008
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
This paper presents the physical properties of vacuum evaporated CdTe thin films with post-deposition thermal annealing. The thin films of thickness 500 nm were grown on glass and indium tin oxide (ITO) coated glass substrates employing thermal vacuum evaporation technique followed by post-deposition thermal annealing at temperature 450 degrees C. These films were subjected to the X-ray diffraction (XRD),UV-Vis spectrophotometer, source meter and atomic force microscopy (AFM) for structural, optical, electrical and surface morphological analysis respectively. The X-ray diffraction patterns reveal that the films have zinc-blende structure of single cubic phase with preferred orientation (111) and polycrystalline in nature. The crystallographic and optical parameters are calculated and discussed in brief. The optical band gap is found to be 1.62 eV and 1.52 eV for as-grown and annealed films respectively. The I-V characteristics show that the conductivity is decreased for annealed thin films. The AFM studies reveal that the surface roughness is observed to be increased for thermally annealed films. (C) 2015 Elsevier B.V. All rights reserved,
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页码:35 / 39
页数:5
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