Optical and Electrical Properties of CuO Thin Films by Spray Pyrolysis Method

被引:2
|
作者
Kuryshchuk, S., I [1 ]
Orletskii, I. G. [1 ]
Shyrokov, O., V [2 ]
Myroniuk, D., V [2 ]
Solovan, M. M. [1 ]
机构
[1] Yuriy Fedkovych Chernivtsi Natl Univ, Dept Elect & Power Engn, 2 Kotsubynsky St, UA-58002 Chernovtsy, Ukraine
[2] Natl Acad Sci Ukraine, Inst Problems Mat Sci, 3 Krhyzhanovsky St, UA-03142 Kiev, Ukraine
关键词
CuO; spray pyrolysis; optical properties; thin films; NANOSTRUCTURES; TEMPERATURE;
D O I
10.12693/APhysPolA.142.625
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Thin films (300 nm thick) of CuO of p-type conductivity were precipitated using the spray pyrolysis method from 0.2 M of aqueous CuCl2 center dot 2H(2)O salt solution on preheated (up to 350 degrees C) glass and sitall substrates. The structure and electrical and optical properties of the films are analyzed. The grain size of CuO thin films (24 nm) was calculated using the XRD analysis. The activation energy equals E-a = 0.27 eV, which may indicate that the conduction is due to the transition of charge carriers from the valence band to the working acceptor level. From the spectral dependence (alpha h nu)(2) = f(h nu) of CuO thin films, the band gap width E-g = 1.46 eV was determined.
引用
收藏
页码:625 / 628
页数:4
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