Structural, opto-thermal and electrical properties of ZnO:Mo sprayed thin films

被引:105
作者
Boukhachem, A. [1 ]
Ouni, B. [1 ]
Karyaoui, M. [2 ]
Madani, A. [3 ]
Chtourou, R. [2 ]
Amlouk, M. [1 ]
机构
[1] Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
[2] Ctr Rech & Technol Energie, Lab Photovolta, Hammam Lif 2050, Tunisia
[3] Carthage Univ, Fac Sci Bizerte, Dept Phys, Lab Phys Mat, Zarzouna 7021, Tunisia
关键词
Spray pyrolysis technique; ZnO:Mo; Urbach tailing; Single oscillator model; Electric conductivity; Amlouk-Boubaker optothermal expansivity; OPTICAL-PROPERTIES; SUBSTRATE-TEMPERATURE; TRANSPARENT; CONSTANTS; THICKNESS; CONDUCTIVITY; DEPOSITION; GROWTH; SNO2; CO;
D O I
10.1016/j.mssp.2012.02.014
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Zinc oxide (ZnO) thin films doped with molybdenum (Mo) have been prepared by the spray pyrolysis technique. X-ray analysis shows that ZnO:Mo thin films crystallize in hexagonal structure with a preferred orientation of the crystallites along (002) direction. The surface topography of these films was performed by the atomic force microscopy. The dispersion of the refractive index was discussed in terms of the single oscillator model proposed by Wemple and DiDomenico. The single oscillator energy (E-0) as well as the dispersion energy (E-d) were therefore calculated. Finally, the electric conductivity was investigated depending on the effect of temperature. The activation energy (E-a) was found to range from 0.63 to 0.94 eV; the electrical behavior can be correlated with Mo-doping. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:282 / 292
页数:11
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