The effect of poly(ethylene glycol) on the crystallisation and phase transitions of nanocrystalline TiO2 thin films

被引：0
|
作者：
Djaoued, Y
Robichaud, J
Brüning, R
Albert, AS
Ashrit, PV
机构：
[1] Univ Moncton, Shippegan, NB E8S 1P6, Canada
[2] Mt Allison Univ, Dept Phys, Sackville, NB E4L 1E6, Canada
[3] Univ Moncton, Dept Phys & Astron, Moncton, NB E1A 3E9, Canada
来源：
MATERIALS SCIENCE-POLAND | 2005年 / 23卷 / 01期
关键词：
nanocrystalline titania films; sol-gel; poly(ethylene glycol) (PEG); phase transition; Raman; XRD;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Titanium dioxide (TiO2) films, composed mainly of anatase nanocrystallites, have been obtained from a low temperature poly(ethylene glycol) (PEG) modified sol-gel method. The maximum process temperature in this method is around 90° C. An addition of PEG in the films accelerates the formation of anatase nanocrystallites. In order to better understand the nature of the influence of PEG on film crystallization, sol-gel solutions were prepared with PEG of different molecular weights (200, 400 and 600). The reference solution without PEG was also prepared. In addition, the influence of different PEG chain lengths on the films' phase transition from anatase to rutile was studied by means of Raman spectroscopy and XRD. Anatase was found to be stable up to 900-1000° C, depending on the molecular weight of the PEG used in the films.
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页码：15 / 27
页数：13
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