Optical properties of sol-gel derived ZrO2-TiO2 composite films

被引：40
|
作者：
Liang, Liping
Sheng, Yonggang
Xu, Yao [1 ]
Wu, Dong
Sun, Yuhan
机构：
[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
[2] Taiyuan Univ Sci & Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China
[3] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
THIN SOLID FILMS | 2007年 / 515卷 / 20-21期
关键词：
ZrO2-TiO2; sol-gel coating; optical properties; structural properties;
D O I：
10.1016/j.tsf.2007.03.142
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Compositional dependences of the optical properties of sol-gel derived ZrO2-TiO2 composite films (with molar ratio of Ti:Zr ranging from 0:10 to 10:0) have been studied. The refractive index, absorption coefficient, and optical band gap were determined from the corresponding transmission spectra based on Swanepoel's method. It was found that the optical properties of the composite films could be easily tailored in a wide range by a simple control on the system composition. As the molar ratio of Ti:Zr increased from 0:10 to 10:01 a clear increase of the refractive index from 1.912 to 2.263 (at 633 nm) was observed. Simultaneously, the optical band gap decreased monotonically from 5.26 to 3.25 eV Combined with the X-ray diffraction analysis, the observed variations in both the refractive index and optical band gap have been directly correlated with the structural evolution of the composite films. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：7765 / 7771
页数：7
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