期刊
SUPERLATTICES AND MICROSTRUCTURES
卷 60, 期 -, 页码 327-335出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2013.05.006
关键词
p-type SnO2:Zn films; Spray pyrolysis; Transparent electronics; Structural properties
资金
- University Grants Commission of India through the Major Research Project [40-28/2011(SR)]
- DST grant [SR/S2/CMP-35/2004]
Zinc doped SnO2 films were prepared using a simplified spray technique and the influence of dopant concentration on structural, electrical, optical and surface morphological properties were analysed in detail. XRD results showed that all the films were polycrystalline SnO2 with tetragonal rutile structure. The transition of preferential orientation from (2 1 1) to (1 01) plane was found to take place beyond 20 at.% of Zn doping level. Hall measurements showed that the films exhibited p-type conductivity when the doping concentration was increased beyond 20 at.%. The average transmittance of the SnO2:Zn films were in the range of 80-90% in the visible region. The enhancement in the PL emission can be correlated with the decrease in the grain size observed from the SEM images and the sharpening of defect related peaks supplemented the formation of trapped states (introduction of dangling bonds) at higher Zn concentrations. (C) 2013 Elsevier Ltd. All rights reserved.
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