Nano-ZnO film preparation at low temperature and the optical indices calculation

The refractive indices of thin films based on Kramers-Kronig theory are corrected. And the correction theory is used to determine the optical indices of nano-ZnO thin films prepared by low temperature sol-gel method. The calculated results indicate that in the visible （Vis） range, the refractive ind...

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Bibliographic Details
Published in:Optoelectronics letters 2014-05, Vol.10 (3), p.216-220
Main Author: 杨爱玲 包西昌 李顺嫔 阳仁强 王婷 王玉金 孙亮
Format: Article
Language:English
Subjects:
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
低温退火
光学
吸收边
折射率
正常色散
纳米ZnO薄膜
膜制剂
计算结果
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Summary:The refractive indices of thin films based on Kramers-Kronig theory are corrected. And the correction theory is used to determine the optical indices of nano-ZnO thin films prepared by low temperature sol-gel method. The calculated results indicate that in the visible （Vis） range, the refractive indices of nano-ZnO thin films exhibit a slight abnormal dispersion, while in the ultraviolet （UV） region, the refractive indices increase with wavelengths increasing （normal dispersion）. But the refractive indices show complex change near the absorption edge. The maximum refractive index （1.95） of nano-ZnO thin films within UV range at low temperature annealing is much lower than that of the films annealed at high temperature. The absorption and refractive indices are closely related to the defects in nano-ZnO thin films.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-014-4034-6