Influence of substrate temperature on structural, morphological and electrical properties of La0.6Sr0.4Co0.2Fe0.8O3 thin films for IT-SOFCs

被引：14
|
作者：
Jamale, A. P. [1 ]
Dubal, S. U. [1 ]
Patil, S. P. [1 ]
Bhosale, C. H. [1 ]
Jadhav, L. D. [2 ]
机构：
[1] Shivaji Univ, Dept Phys, Kolhapur 416004, Maharashtra, India
[2] Rajaram Coll, Dept Phys, Kolhapur 416004, Maharashtra, India
来源：
APPLIED SURFACE SCIENCE | 2013年 / 286卷
关键词：
Nanocrystalline; Spray pyrolysis technique; Electrical conductivity; Microstructure; OXIDE FUEL-CELLS; SPRAY-PYROLYSIS; YSZ; CATHODE; MICROSTRUCTURE; CONDUCTIVITY; MECHANISMS; ELECTRODES; MEMBRANES;
D O I：
10.1016/j.apsusc.2013.09.020
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：
The crack free, homogeneous, nanocrystalline La0.6Sr0.4Co0.2Fe0.8O3 thin films have been deposited on Ce0.9Gd0.1O1.95 electrolyte by the spray pyrolysis technique. The films with typically 1-2 pin thickness, get crystallized on annealing at 800 degrees C. In the present work, the effect of substrate temperature on microstructure, crystallization and conductivity has been systematically studied. The deposition of film at 300 degrees C shows higher in plane electrical conductivity of 26.6 S cm(-1) with activation energy, E-a = 0.23 eV. The higher conductivity attributes to uniform, thin and dense microstructure of thin films. No interfacial reaction products between La0.6Sr0.4Co0.2Fe0.8O3 and Ce-0.9 Gd0. 1O1.95 were detected upon annealing at 800 degrees C/4 h. The uniformity and porosity distribution as a function of deposition temperature clarified from Scanning Electron micrograph. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：78 / 82
页数：5
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