Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5458483 | Journal of Alloys and Compounds | 2017 | 20 Pages |
Abstract
Mn and Mn-Co doped SnO2 have been successfully synthesized using co-precipitation technique. The structural properties and surface morphology were studied using x-ray diffractometer (XRD) and scanning electron microscopy (SEM) respectively. Composition analysis of the samples has been carried out from EDX data. Optical properties were studied using reflectance spectroscopy in the wavelength range 200Â nm-800Â nm and IR absorption spectroscopy in the wave number range 400Â cmâ1-4000Â cmâ1. Reflectance spectra revealed that the band gap of prepared samples changes with doping concentration and found to be in the range 3.91Â eV-3.95Â eV. Infrared (IR) absorption spectra describe the different mode of band related to a functional group present in the materials. Mn and Mn-Co doped SnO2 exhibit very strong emission near the wavelength 413Â nm and 434Â nm. DC resistivity measurement shows that the activation energy increases with increasing concentration of dopant.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Naseem Ahmad, Shakeel Khan,