Thickness dependence of the structural and electrical properties of ZnO thermal-evaporated thin films

被引:0
作者
Ghaderi, A. [1 ]
Elahi, S. M. [2 ]
Solaymani, S.
Naseri, M. [3 ]
Ahmadirad, M. [4 ]
Bahrami, S. [1 ]
Khalili, A. E. [1 ]
机构
[1] Islamic Azad Univ, Tehran Cent Branch, Dept Phys, Tehran, Iran
[2] Islamic Azad Univ, Sci & Res Branch, Plasma Phys Res Ctr, Tehran, Iran
[3] Islamic Azad Univ, Kermanshah Branch, Dept Phys, Kermanshah, Iran
[4] Inst Res Fundamental Sci IPM, Tehran, Iran
来源
PRAMANA-JOURNAL OF PHYSICS | 2011年 / 77卷 / 06期
关键词
Zinc oxide thin film; thermal evaporation; X-ray diffraction; atomic force microscope; electrical conductivity; OPTICAL-PROPERTIES; TEMPERATURE; GROWTH; SUBSTRATE;
D O I
10.1007/s12043-011-0155-7
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
ZnO thin films of different thicknesses were prepared by thermal evaporation on glass substrates at room temperature. Deposition process was carried out in a vapour pressure of about 5.54 x 10(-5) mbar. The substrate target distance was kept constant during the process. By XRD and AFM techniques the microstructural characteristics and their changes with variation in thickness were studied. Electrical resistivity and conductivity of samples vs. temperature were investigated by four-probe method. It was shown that an increase in thickness causes a decrease in activation energy.
引用
收藏
页码:1171 / 1178
页数:8
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