Indium sulfide thin films deposited by chemical spray of aqueous and alcoholic solutions

被引:27
|
作者
Otto, K. [1 ]
Katerski, A. [1 ]
Volobujeva, O. [1 ]
Mere, A. [1 ]
Krunks, M. [1 ]
机构
[1] Tallinn Univ Technol, Dept Mat Sci, EE-19086 Tallinn, Estonia
关键词
Indium sulfide; chemical spray pyrolysis; solvents; structural properties; morphology; elemental composition; XRD; SEM; XPS; PYROLYSIS;
D O I
10.1016/j.egypro.2011.01.011
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
In2S3 films were grown by pneumatic chemical spray method using aqueous and alcoholic solutions containing InCl3 and SC(NH2)(2) at molar ratios of [In]/[S]=1/3 and 1/6. Films were deposited onto preheated glass sheets in air at heater (molten Sn bath) temperatures of 250 and 330 degrees C. Films were characterized by means of XRD, SEM, UV-VIS spectra and XPS. beta-In2S3 films were formed independent of the technological variables. The films from aqueous solutions are highly orientated along (0 0 12) plane parallel to the substrate, with E-g of 2.2-2.3 eV (indirect transitions). Spray of alcoholic solutions results in thinner but more compact films with reduced (0 0 12) orientation, E-g of ca. 2.0 eV, and no chlorine contamination when deposited at 330 degrees C. According to XPS, the films have uniform concentration of the elements through the film thickness, spray of sulfur-rich solutions ([In]/[S]=1/6) results in the films with lower oxygen content. (C)2009 Published by Elsevier B. V.
引用
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页数:7
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