EFFECT OF LASER IRRADIATION ON STRUCTURAL, ELECTRICAL AND OPTICAL-PROPERTIES OF SNO2 FILMS

被引：19
|
作者：
DAWAR, AL
KUMAR, A
SHARMA, S
TRIPATHI, KN
MATHUR, PC
机构：
[1] ARSD COLL, DEPT PHYS, NEW DELHI 110021, INDIA
[2] UNIV DELHI, DEPT ELECTR SCI, NEW DELHI 110021, INDIA
来源：
JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 03期
关键词：
D O I：
10.1007/BF01151238
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Thin films of SnO2 were prepared using a spray pyrolysis technique. Films were irradiated with Nd:YAG laser pulses of various energy densities (2-50 mi cm-2) with varying number of pulses from 1-50. X-ray diffraction studies were made to investigate the structural changes due to laser irradiation. An improvement in crystallinity and an increase in grain size were observed in laser-irradiated films. Hall coefficient and Hall mobility studies were made in the temperature range 77-300 K for the as-grown as well as laser-irradiated films. An increase in mobility and a decrease in carrier concentration were observed in the films after laser irradiation. Optical transmission studies revealed that the refractive index increased as a result of laser irradiation.
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页码：639 / 644
页数：6
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