Reversible Cu2-xSe⇆Cu3Se2 phase transformation in copper selenide thin films prepared by chemical bath deposition

被引：70

作者：

Lakshmi, M

Bindu, K

Bini, S

Vijayakumar, KP

Kartha, CS ^{[1
]}

Abe, T

Kashiwaba, Y

机构：

[1] Cochin Univ Sci & Technol, Dept Phys, Kochi 682022, Kerala, India

[2] Iwate Univ, Dept Elect & Elect Engn, Morioka, Iwate 0208551, Japan

来源：

THIN SOLID FILMS | 2001年 / 386卷 / 01期

关键词：

copper selenide thin film; phase transformation; chemical bath deposition;

D O I：

10.1016/S0040-6090(00)01783-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper reports the inter phase conversion of Cu2-xSe and Cu3Se2 thin films prepared using the chemical bath deposition (CBD) technique. Chemically prepared Cu2-xSe phase is found to be less stable than the Cu3Se2 phase in ambient conditions. With aging the Cu2-xSe phase gets converted to the Cu3Se2 phase along with the formation of copper oxide impurity. The Cu3Se2 phase is stable in ambient conditions but is unstable at temperatures above 140 degreesC where it reverts to the Cu2-xSe phase. This inter phase conversion is found to be cyclic. The relative stability of these phases is studied in detail with the help of X-ray diffraction, optical absorption and X-ray photoelectron spectroscopy. (C) 2001 Elsevier Science B.V. All rights reserved.

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收藏

页码：127 / 132

页数：6

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