Micro-Raman spectroscopy on polyethylene-glycol assisted sol-gel meso and macroporous WO3 thin films for electrochromic applications

被引：36

作者：

Cremonesi, A. ^{[1
,2
]}

Djaoued, Y. ^{[3
]}

Bersani, D. ^{[4
,5
]}

Lottici, P. P. ^{[4
,5
]}

机构：

[1] Univ Parma, GIAF Chem Dept, I-43100 Parma, Italy

[2] Univ Parma, INSTM, I-43100 Parma, Italy

[3] Univ Moncton, Shippegan, NB E8S 1P6, Canada

[4] Univ Parma, Dept Phys, I-43100 Parma, Italy

[5] Univ Parma, CNISM, I-43100 Parma, Italy

来源：

THIN SOLID FILMS | 2008年 / 516卷 / 12期

关键词：

sol-gel templating process; tungsten oxide; micro-Raman spectroscopy;

D O I：

10.1016/j.tsf.2007.10.075

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tungsten oxide (WO3) is one of the most promising materials for electrochromic devices and is currently investigated for applications in catalysis, ferroelectricity and in sensor technology. Here a molecular assembly approach to synthesize by sol-gel meso and macroporous thin films of tungsten oxide using polyethylene-glycol as a templating agent is reported. Micro-Raman spectroscopy has been employed to investigate the structure Of WO3 thin films, deposited by dip-coating on glass, as a function of thermal annealing. This modified sol-gel route promotes the coexistence of a sub-stoichiometric monoclinic phase (most probably the WO2.72 phase) together with some hydrous phases (WO3 center dot nH(2)O) even in samples heat treated up to 500 degrees C. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：4128 / 4132

页数：5

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