Study of variation of band gap energy and thickness with temperature of CuInTe2 thin films prepared by spray pyrolysis

Y. D. Tembhurkar; A. S. Meshram; O. P. Chimankar

Volume : V, Issue : VII, July - 2016

Study of variation of band gap energy and thickness with temperature of CuInTe2 thin films prepared by spray pyrolysis

Y. D. Tembhurkar, A. S. Meshram, O. P. Chimankar

Abstract :

Spray pyrolysis is a simple and inexpensive method for preparation of thin films on a large area. CuInTe2 thin films were prepared by spray pyrolysis on glass substrate temperatures between 2750c to 3750c at interval of 250c. thicknesses of the optical band gap energy were calculated by Michelson interferometer. Optical band gap energy were calculated by plotting the graph between (αhν)2 vs hv. The study reveals that CuInTe2 is direct band gap energy equal to 0.98 eV which matching with single crystal. Band gap energy decreases as temperature increases upto 3500c. Further increase in temperature the band gap energy increases while increase in temperature thickness of the films increases upto 3500c. After this decrease of thickness takes place. The band gap at temperature 3500c confirms the stability of materials with nearly stoichiometry