Synthesis and characterization of nanostructural CuS-ZnS binary compound thin films prepared by spray pyrolysis

被引：36

作者：

Adelifard, Mehdi ^{[1
]}

Eshghi, Hosein ^{[1
]}

Mohagheghi, Mohammad Mehdi Bagheri ^{[2
]}

机构：

[1] Shahrood Univ Technol, Dept Phys, Shahrood 31636155, Iran

[2] Damghan Univ, Sch Phys, Damghan, Iran

来源：

OPTICS COMMUNICATIONS | 2012年 / 285卷 / 21-22期

关键词：

CuS-ZnS compound semiconductor; Nanostructures; Optical properties; Electrical properties; Spray pyrolysis; STRAINED-LAYER SUPERLATTICES; CHEMICAL BATH DEPOSITION; OPTICAL-PROPERTIES; SOLAR-CELLS; GROWTH;

D O I：

10.1016/j.optcom.2012.06.030

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have investigated the effect of zinc concentration ([Zn]/(Cu] = 0-100 at%) on nanostructural, optical and electrical properties of CuS-ZnS binary thin films grown on glass substrate by the spray pyrolysis technique. X-ray diffraction analysis showed that the films were crystallized with mixed structures of CuS hexagonal and ZnS cubic structure. UV-vis optical measurements analysis showed that these binary films have a relatively high absorption coefficient (similar to 10(5) cm(-1)) in the visible spectrum with a direct band gap in the range of 2.57-2.45 eV in agreement with the corresponding room temperature PL spectra. The electrical studies showed that all these samples have a p-type conductivity and the free hole density decreases with increasing [Zn]/[Cu] molar ratio, in agreement with the reflectance spectra of the layers, originating from plasma oscillations. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：4400 / 4404

页数：5

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