Thermal and Optical Study of Te15(Se100-xBix)85 (x = 0, 1, 3) Chalcogenide Glasses

Authors Kameshwar Kumar1, Pankaj Sharma2, S.S. Bhatt3, Nagesh Thakur1

1 Department of Physics, H.P. University, Shimla, 171005, India

2 Department of Physics, Jaypee University of Information Technology, Waknaghat, Solan, H.P. (173215), India

3 Department of Chemistry, H.P. University, Shimla, 171005, India

Issue Volume 3, Year 2011, Number 1, Part 2
Dates Received 04 February 2011, in final form 27 April 2011, published online 08 May 2011
Citation Kameshwar Kumar, Pankaj Sharma, S.S. Bhatt, Nagesh Thakur, J. Nano- Electron. Phys. 3 No1, 404 (2011)
PACS Number(s) 65.90. + i, 78.20.Ci
Keywords Differential thermal analysis, Glass transition temperature (3) , Optical band gap (7) , Refractive index and thermal stability.
The present paper reports the thermal and optical study of Te15(Se100–xBix)85 (x = 0, 1, 3 at. %) glassy alloys. The glass transition temperature (Tg), crystalli-zation temperature (Tc) and melting temperature (Tm) are found from the DTA plots taken at different heating rates of 10, 15, 20 and 25 K/min. The glass transition temperature and melting temperature have been found to increase and the crystallization temperature has been found to decrease with increase in Bi content (x). Refractive index and optical energy gap of the films have been calculated from the transmission spectra taken in the spectral range 400-2300 nm. The refractive index decreases with wavelength and the optical band gap decreases with increase in Bi content.

List of References