Sol–Gel Fabrication of Epitaxial and Oriented TiO2Thin Films
作者:
Ulagaraj Selvaraj,
Alamanda V. Prasadarao,
Sridhar Komarneni,
Rustum Roy,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1992)
卷期:
Volume 75,
issue 5
页码: 1167-1170
ISSN:0002-7820
年代: 1992
DOI:10.1111/j.1151-2916.1992.tb05554.x
出版商: Blackwell Publishing Ltd
关键词: titania;sol‐gel;thin films;epitaxy;orientation
数据来源: WILEY
摘要:
Thin films of titania have been prepared by spin coating on fused silica, Si(100), and rutile(110), starting with a sol–gel process. The alkoxide solution was chelated with diisopropanolamine, and the resulting precursor solution was hydrolyzed prior to coating. Oriented rutile films were obtained on fused silica and Si(100), while epitaxially oriented film was formed on rutile (110). X‐ray diffraction results indicated that the as‐deposited films transformed to rutile via anatase with increasing temperature. The phase transformation temperature was found to be dependent on the substrate, and it was in general higher on the substrates than that observed for the gel powder. Microstructural studies revealed that these films consisted of finely dispersed grains of 0.05 to 0.15 μm i
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