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Chemical bond approach to optical band gap in Se100-xSbx chalcogenide glasses

S. SRIVASTAVA1, N. MEHTA2,* , R. S. TIWARI3, R. K. SHUKLA1, A. KUMAR1

Affiliation

  1. Department of Physics, Harcourt Butler Technological Institute, Kanpur, India
  2. Department of Physics, Banaras Hindu University, Varanasi, India
  3. Department of Physics, Apolo Institute of Engineering and Technology, Kanpur, India

Abstract

In the present work, values of the optical band gap Eg of glassy Se100-xSbx alloys are determined from experimentally observed data of transmission at different wavelengths using three different methods. The theoretical prediction of Eg values is also made using random bond network model proposed by Shimakawa. The composition dependence of Eg is discussed using chemical bond approach..

Keywords

Chalcogenide glasses, Optical materials, Optical band gap.

Submitted at: Jan. 7, 2011
Accepted at: Jan. 26, 2011

Citation

S. SRIVASTAVA, N. MEHTA, R. S. TIWARI, R. K. SHUKLA, A. KUMAR, Chemical bond approach to optical band gap in Se100-xSbx chalcogenide glasses, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 1, pp. 13-18 (2011)