1Organic Photovoltaics Laboratory, Department of Physics, North Maharashtra University, Jalgaon-425001
2Department of Physics, University of Pune, Pune-411007
*E-mail: ssghosh@nmu.ac.in
Online published on 10 August, 2015.
TiO2 has applications in organic solar cells. In the present work nanocrystalline TiO2 is synthesized by the combustion reaction involving titanyl nitrate and glycine as fuel. Nanosized titania with average crystallize size 5.5 nm was obtained in the as synthesized titania powder. Heat treatment study of the obtained powder was performed and it was found that upon heating at 400°C and 800°C particle size increased to 12.3 nm and 28 nm respectively. It was observed that after heat treatment at 500°C for 7 h rutile phase appeared in the XRD pattern and upon heating at 800°C pure rutile phase was obtained. Mass percentage of rutile phase in the heat treated powder was also calculated for various temperatures. The samples were characterized using X-ray diffraction and transmission electron microscopy.
Combution method, XRD, TEM, optical, crystallite size
