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Influence of sodium intercalation and temperature on the exciton absorption in GaSe by M.A. Osman; A.A. Othman is a Physics and Astronomy article available to read on EtoBox.
What is Influence of sodium intercalation and temperature on the exciton absorption in GaSe about?
Analysis of the experimental absorption data in GaSe showed that, at low temperature (110 K), intercalation process of sodium atoms, as well as the presence of silicon impurities and native defects such as Ga vacancies and interstitials in a high concentration, result effectively in the broadening of the ground state of the direct exciton and the decrease of exciton peak intensity. On the other hand, increasing temperature leads to the increase of the broadening parameter F and a shift of both the position of exciton peaks Eex, and the band gap Eg toward longer wavelength. These effects can be ascribed to exciton-phonon and exciton-imperfection interactions. Furthermore, acceptable and reasonable values of the temperature coefficient/~ of the above-mentioned parameters were determined and are equal to + 8.64 x 10 -4, -3.52x 10 4 and -3.38 x 10-4eVK -1, respectively.
Who reads Influence of sodium intercalation and temperature on the exciton absorption in GaSe?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- M.A. Osman; A.A. Othman
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-4526)
- Published
- 1997
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)