薄膜
材料科学
折射率
透射率
基质(水族馆)
带隙
摩尔吸收率
热分解法
分析化学(期刊)
硫脲
衍射
光学
光电子学
纳米技术
化学
海洋学
物理
地质学
有机化学
色谱法
作者
H. Dlala,M. Amlouk,S. Belgacem,P. Girard,D. Barjon
出处
期刊:European Physical Journal-applied Physics
[EDP Sciences]
日期:1998-04-01
卷期号:2 (1): 13-16
被引量:39
标识
DOI:10.1051/epjap:1998162
摘要
Silver sulphide Ag2 S thin films have been prepared on pyrex glass substrates by the spray pyrolysis technique using silver acetate and thiourea as starting materials. The depositions were carried out in the range of substrate temperatures from 100 to 300 °C. Measurements of X-ray diffraction show that the deposited layers at 250 °C were well crystallized and oriented preferentially in the direction . Films surfaces were analysed by contact Atomic Force Microscopy (AFM) in order to understand the effect of the deposited temperature on the surface structure. On the other hand, from transmission and reflection spectra, the band gap energy determined is about 1.14 eV. In the same way, an iterative method based on the optical reflectance and transmittance of Ag2S thin film prepared at 250 °C were used to obtain the refractive index and the extinction coefficient. Their values vary in the wavelength range 640-2200 nm from 2.38 to 2.81 and from 0.001 to 0.277 respectively.
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