The Structural, Optical and Electrical Properties of Spin Coated WO 3 Thin Films Using Organic Acids
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- 作者：M. Raja ; J. Chandrasekaran ; M. Balaji
- 关键词：Organic acid additives ; Tungsten trioxide ; Surface morphology ; DC electrical conductivity
- 刊名：Silicon
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：9
- 期：2
- 页码：201-210
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Inorganic Chemistry; Materials Science, general; Optics, Lasers, Photonics, Optical Devices; Environmental Chemistry;
- 出版者：Springer Netherlands
- ISSN：1876-9918
- 卷排序：9
文摘
Tungsten trioxide (WO3) thin films were prepared incorporating various organic acid additives by the sol-gel spin coating technique. They were characterized by X-ray diffraction (XRD), UV-Visible analysis, scanning electron microscopy (SEM) and dc electrical conductivity. From XRD, the crystal phase, average grain size and structural parameters of WO3 thin films were found to vary owing to different water dissolved organic acid additives. The variation of optical conductivity and band gap energy was calculated from the UV-Visible analysis. The SEM studies revealed that the organic acids influenced the surface morphology of the microsized plates of tungsten oxides. The electrical conductivity at various temperatures correlated with the average grain size of the nanocrystallites of WO3 thin films.