Observation of Meyer-Neldel rule in CdS thin films

被引：9

作者：

Hariech, S. ^{[1
]}

Aida, M. S. ^{[1
,2
]}

Moualkia, H. ^{[1
,3
]}

机构：

[1] Univ Constantine, Fac Sci, Lab Couches Minces & Interfaces, Constantine, Algeria

[2] Taibah Univ, Dept Phys, Fac Sci, Madinah, Saudi Arabia

[3] Univ Oum el Bouaghi, Fac Sci, Oum El Bouaghi, Algeria

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2012年 / 15卷 / 02期

关键词：

II-VI semiconductors; Meyer-Neldel rule; Polaron; Chemical bath; OPTICAL-PROPERTIES; ELECTRON-TRANSFER; CONDUCTIVITY; TRANSPORT; APPLICABILITY; CONNECTION; DIFFUSION;

D O I：

10.1016/j.mssp.2011.10.008

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A study of electrical transport in CdS thin films is reported. We have observed, for the first time, that CdS thin film conductivity obeys the Meyer-Neldel rule (MNR). This was deduced from linking the conductivity pre-exponential factor to the activation energy variation. CdS films were deposited by chemical bath deposition at different solution temperatures in order to vary the electrical activation energy of the films. A correlation between the MNR rule and the disorder in the film network is highlighted. The multi-trapping process in the band tail-localized states governs the conductivity in CdS films. This explains the MNR observation in CdS films. The variation of the electrical conductivity pre-exponential factor and activation energy are correlated to the disorder in the film network; this was explained in terms of polaron formation and phonon-electron coupling with disorder. (c) 2011 Elsevier Ltd. All rights reserved.

引用

页码：181 / 186

页数：6

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