A study of the optical bandgap energy and Urbach tail of spray-deposited CdS:In thin films

被引：0

作者：

机构：

[1] Faculty of Information Technology, Department of Basic Sciences-Physics, Al Isra University, Amman

[2] Faculty of Science, Physics Department, University of Jordan, Amman

来源：

Ikhmayies, S.J. (shadia_ikhmayies@yahoo.com) | 2013年 / Elsevier Editora Ltda卷 / 02期

关键词：

Cadmium sulfide; Optical bandgap; Solar cells; Thin films; Urbach tail;

D O I：

10.1016/j.jmrt.2013.02.012

中图分类号：

学科分类号：

摘要：

Cadmium sulfide (CdS) is an interesting material for applications in optoelectronic and photovoltaic devices. In particular, thin films of n-type CdS are widely used as a window layer in heterojunction solar cells. The optical bandgap energy is the most interesting parameter for these applications. For spray-deposited indium-doped cadmium sulfide (CdS:In) thin films prepared on glass substrates the transmittance measurements were used to estimate the optical bandgap energy. Tailing in the bandgap was observed and found to obey Urbach rule. The effects of film thickness and the substrate temperature on the bandgap energy and the width of the tail were investigated. A linear relation between bandgap energy and width of the tail was found. © 2013 Brazilian Metallurgical, Materials and Mining Association.

引用

页码：221 / 227

页数：6

共 25 条

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