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LIGHT-INDUCED VOLUME CHANGES IN AMORPHOUS SELENIUM. MOLECULAR DYNAMICS SIMULATION; SAMPLE PREPARATION AND EXCITATION

J. Hegedus1,2, K. Kohary3, S. Kugler1,*

Affiliation

  1. Department of Theoretical Physics, Budapest University of Technology and Economics, H-1521 Budapest, Hungary
  2. Department of Physics and Material Sciences Center, Philipps University Marburg, Renthof 5 D-35032 Marburg, Germany
  3. Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK

Abstract

We investigated the photo-induced changes in chalcogenide (selenium) glasses by self consistent tight-binding molecular dynamics simulations. Our aim was to prepare realistic glassy networks which mimic the real thin film structures. The samples, prepared by a 'cook and quench' method, were used in a systematic study of the response to light induced excitation. Light-excitation was modeled by transferring an electron from the HOMO to the LUMO state..

Keywords

Photo-induced phenomena, Tight-binding molecular dynamics simulation, Amorphous selenium.

Submitted at: Dec. 9, 2004
Accepted at: Jan. 26, 2005

Citation

J. Hegedus, K. Kohary, S. Kugler, LIGHT-INDUCED VOLUME CHANGES IN AMORPHOUS SELENIUM. MOLECULAR DYNAMICS SIMULATION; SAMPLE PREPARATION AND EXCITATION, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 1, pp. 59-64 (2005)