V. Mikla et al., INFLUENCE OF PREPARATION CONDITIONS ON PHOTO-STRUCTURAL AND THERMO-STRUCTURAL CHANGES OF ASXS1-X FILMS, Materials science & engineering. B, Solid-state materials for advanced technology, 38(1-2), 1996, pp. 122-126
Photo- and thermo-structural changes occuring in vacuum-deposited amor
phous chalcogenide films prepared by different methods have been inves
tigated using Raman scattering. The changes in the Raman spectra of co
nventionally prepared amorphous As2S3 films after: light treatment are
interpreted in terms of rearrangement of bonding configurations of mo
lecular species that exist just after evaporation. As the evaporation
temperature or deposition rate is increased, heat or light treatment i
nduces the formation of microcrystallites. The reversible photo-induce
d changes in well-annealed films involve a vanishingly small change in
bonding statistics. The most significant photostructural change occur
s in the medium-range order.