Role of substrate temperature on the growth mechanism and physical properties of spray deposited lead oxide thin films

被引：33
|
作者：
Suganya, M. [1 ]
Balu, A. R. [1 ]
Usharani, K. [1 ]
机构：
[1] AVVM Sri Pushpam Coll, PG & Res Dept Phys, Poondi 613503, Tamil Nadu, India
来源：
MATERIALS SCIENCE-POLAND | 2014年 / 32卷 / 03期
关键词：
thin films; X-ray diffraction; crystal structure; energy band gap; electrical properties; ELECTROCHEMICAL PROPERTIES; OPTICAL-PROPERTIES; PYROLYSIS;
D O I：
10.2478/S13536-014-0208-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Thin films of lead oxide were synthesized by cost effective spray pyrolysis technique at different substrate temperatures on glass substrates. Effect of substrate temperature on the growth mechanism and physical properties of the films was investigated. All the films were polycrystalline in nature with tetragonal structure corresponding to alpha-PbO. The films coated at 225 degrees C and 275 degrees C were (1 0 1) oriented, while the films deposited at 325 degrees C and 375 degrees C were (0 0 2) oriented. Above 375 degrees C, the pure tetragonal nature deteriorated and the peaks corresponding to orthorhombic phase were observed. The band gap value was found to be in the range of 2.3 to 2.62 eV. All the films had a resistivity of the order of 10(3) ohm-cm. A minimum resistivity of 0.0191 x 10(3) ohm-cm was obtained for the film coated at 325 degrees C. The activation energy increased with increase in substrate temperature.
引用
收藏
页码：448 / 456
页数：9
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