Quenching of photoconductivity in Fe doped CdS thin films prepared by spray pyrolysis technique

被引：71

作者：

Badera, Nitu ^{[1
]}

Godbole, Bhavana ^{[1
]}

Srivastava, S. B. ^{[1
]}

Vishwakarma, P. N. ^{[2
]}

Chandra, L. S. Sharath ^{[2
]}

Jain, Deepti ^{[2
]}

Gangrade, Mohan ^{[2
]}

Shripathi, T. ^{[2
]}

Sathe, V. G. ^{[2
]}

Ganesan, V. ^{[2
]}

机构：

[1] Vikram Univ, Sch Studies Phys, Ujjain 456010, Madhya Pradesh, India

[2] UGC DAE Consortium Sci Res, Indore 452017, Madhya Pradesh, India

来源：

APPLIED SURFACE SCIENCE | 2008年 / 254卷 / 21期

关键词：

CdFeS; nanorod; photoconductivity; spray pyrolysis; thin film;

D O I：

10.1016/j.apsusc.2008.05.218

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fe doped CdS films are prepared using spray pyrolysis technique. All the samples are found to be of single phase and crystallized in hexagonal lattice. The X-ray diffraction peaks position of Cd-1 xFexS shifts to higher angle with increasing Fe concentration indicating decrease in cell volume. The temperature dependence of resistivity follows Arrhenius behavior having lower activation energy with increasing Fe concentration in dark while there is a little variation in light. Pure CdS films are having large photoconductivity. Upon Fe incorporation, this photoconductivity gradually decreases and for concentration more than 20%, it is almost vanished. Note worthy observation is the changes seen in morphology with AFM, viz. nanorod features seen in CdS is changed to continuous nanorod like structures depicting signatures of Ostwald ripening. (C) 2008 Elsevier B. V. All rights reserved.

引用

页码：7042 / 7048

页数：7

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