Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7990729 | Journal of Alloys and Compounds | 2018 | 20 Pages |
Abstract
MgyZn1-yO/ZnO thin films have been deposited on soda lime glass substrates by using sol-gel spin coating technique with varying Mg contents (yâ¯=â¯2, 4, 6, 8â¯at. %). X-ray diffraction (XRD) studies indicate that films exhibit the wurtzite phase with a preferential c-axis (002) orientation. The scanning electron micrographs revealed that at low doping level round and oval shaped microstructure were formed and on increasing Mg content nanoflower and nanoplate morphology were found. The transmittance of the thin films was measured in the wavelength range 300â¯nm-800â¯nm and the bandgap increased from 3.25â¯eV to 3.29â¯eV with increasing Mg content. The I-V measurements were performed in dark and illumination conditions show Ohmic behaviour. MgyZn1-yO/ZnO (yâ¯=â¯2â¯at. %) thin films show high stability and fast switching UV photoresponse behaviour. The highest responsivity of 0.16 A/W was obtained at 3.2 mW/cm2exposure of UV light (365â¯nm) at 5â¯V bias voltage.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Vijay S. Rana, Jeevitesh K. Rajput, Trilok K. Pathak, L.P. Purohit,