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 SM ISO690:2012YOVU, M., SHUTOV, Serghei, REBEJA, S., KOLOMEYKO, Eduard, POPESCU, Mihai A.. The effect of metal dopants on photodarkening kinetics in amorphous AsSe and As2Se3 thin films. In: Physica Status Solidi (A) Applied Research, 2000, vol. 181, pp. 529-537. ISSN 0031-8965. DOI: https://doi.org/10.1002/1521-396X(200010)181:2<529::AID-PSSA529>3.0.CO;2-D |
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 Physica Status Solidi (A) Applied Research |
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| Volumul 181 / 2000 / ISSN 0031-8965 /ISSNe 1521-396X | ||||||
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| DOI:https://doi.org/10.1002/1521-396X(200010)181:2<529::AID-PSSA529>3.0.CO;2-D | ||||||
| Pag. 529-537 | ||||||
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Photodarkening relaxation under light exposure of a-As2Se3 amorphous films doped with 0.5 at.% of metals Sn, Mn, Sm or Dy and a-AsSe films doped with Sn up to 10.0 at.% Sn was studied in dependence on the impurity and thermal treating. Both factors reduce photodarkening and the degree of reduction depends on the type of impurity. The relaxation process may be described by a stretched exponential with the dispersion parameter 0.4 ≤ a < 1 and time constant increasing with embedding of impurity or thermal annealing. The results are discussed in the frame of the recently forwarded "slip-motion" model of photodarkening in chalcogenide glasses. |
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| Cuvinte-cheie Amorphous films, Annealing, Composition effects, Doping (additives), Dysprosium, Impurities, manganese, Photochromism, Reaction kinetics, Relaxation processes, Samarium, tin |
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