Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 523, Issue -, Pages 83-87Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2012.01.072
Keywords
Sol-gel process; X-ray diffraction; TEM; Luminescence
Categories
Funding
- CSIR, New Delhi
Ask authors/readers for more resources
Mn doped SnO2 nanoparticles were synthesized by sol-gel method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDAX), UV-Visible absorption spectroscopy, photoluminescence (PL), Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy measurements. XRD analysis revealed the formation of single phase rutile type tetragonal structure of all samples which was further supported by Raman studies and FTIR measurements. Crystallite size was observed to vary from 16.2 nm to 7.1 nm as the Mn content increased from 0% to 15%, suggesting the prevention of crystal growth with Mn doping. It was evident from the absorption spectra that the absorbance tends to increase with the increase in dopant concentration. Optical band gap was calculated using Tauc relation and found to increase with the increase in Mn content confirming the size reduction as a result of Mn doping. Raman spectroscopy measurement depicted the broadening of most intense Raman peak observed at 630 cm(-1) with Mn doping, indicating that the Mn ions are substituted at the Sn sites in SnO2 matrix. Room temperature PL spectra revealed that the intensity of luminescent emission tends to increase with the increase in Mn concentration. (C) 2012 Elsevier B. V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available