On the optical properties of CdS thin films

被引：0
|
作者：
Ciupina, V. [1 ]
Baban, C. [2 ]
Petcu, A. [1 ]
Petcu, L. [1 ]
Rambu, P. [2 ]
Prodan, G. [1 ]
Rusu, G. I. [2 ]
机构：
[1] Ovidius Univ, Fac Phys, Constanta 900527, Romania
[2] Alexandru Ioan Cuza Univ, Fac Phys, Iasi 700506, Romania
来源：
JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS | 2008年 / 10卷 / 03期
关键词：
cadmium sulfide; thin films; TEK optical properties;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cadmium sulfide thin films (d = 0. 12 - 1.25 mu m) were deposited onto glass substrates by the quasi-closed volume technique under vacuum. The investigations shown that the films are polycrystalline and have a hexagonal (wurtzite) structure. Reflection, transmission and absorption spectra were studied in spectral range 300 - 1400 nm. Energy bandgap calculated from absorption spectra (assuming that allowed direct band-to-band transitions are predominant) ranged between 2.30 and 2.60 eV. The effect of the heat treatment (consisting of several heating/cooling cycles within a temperature range Delta T = 300 500 K) on the optical properties has been studied. The heat treated samples are characterized by higher values of transmission coefficient. This fact is probably due to the increase of crystallite size (the decrease of intercrystallite boundaries).
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页码：665 / 667
页数：3
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