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Radiative lifetime of excitons in chalcogenide glasses

JAI SINGH1,*

Affiliation

  1. Lawrence Berkeley National Laboratory, Berkeley, CA94720, USA

Abstract

The radiative lifetime of triplet excitons, is studied here for the first time theoretically in chalcogenide glasses. A new timedependent exciton-spin-orbit-photon interaction operator is derived and rates of radiative recombination of triplet excitons and corresponding radiative lifetimes are calculated in three chalcogenide glasses, a-As2S3, a-As2Se3 and a-Se. Results agree quite well with the experimental results. The theory is quite general and can be applied to any amorphous materials, including organics..

Keywords

Chalcogenide glasses, Excitons, Radiative recombination.

Submitted at: July 3, 2007
Accepted at: Oct. 15, 2007

Citation

JAI SINGH, Radiative lifetime of excitons in chalcogenide glasses, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 10, pp. 3013-3020 (2007)