Effect of structural defects on optical properties of amorphous selenium films
Kotkata, M. F.; Abdel-Wahab, Fathy;
Abstract
Thickness of film, energy of incident photons and glass transition temperature all affect the structural bonding between neighbours and are considered to be the main factors in studying the optical properties of amorphous selenium films. The results indicate that in the lowtemperature range (T Tg), the value of Egopt for a given thickness decreases by more than 50% due to pronounced modulation of the structural defects under incidence of isoenergetic photons of 1.8 eV. The isothermal curves of T, R=f(t), at T >Tg, take place via three time-dependent stages. These results are interpreted and are correlated with the temperature dependence of the morphological changes declaring the formation of spherulites having a lamellar structure. The kinetic parameters controlling the structural transition are computed and the results are discussed. © 1990 Chapman and Hall Ltd.
Other data
Title | Effect of structural defects on optical properties of amorphous selenium films | Authors | Kotkata, M. F.; Abdel-Wahab, Fathy | Issue Date | 1-May-1990 | Journal | Journal of Materials Science | Volume | 25 | Start page | 2379 | End page | 2388 | ISSN | 00222461 | DOI | 10.1007/BF00638031 | Scopus ID | 2-s2.0-0025432253 |
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