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Photoinduced and thermally-induced effects in mesoscopic scale for amorphous GeS film

1997; Elsevier BV; Volume: 103; Issue: 9 Linguagem: Inglês

10.1016/s0038-1098(97)00244-5

1879-2766

Tamio Kawaguchi,

Chalcogenide Semiconductor Thin Films

For virgin, illuminated and annealed GeS2 films, the Ag photodoping, dissolution in a KOH solution and volume change have been examined to reveal the photo-and thermally-induced effects in mesoscopic scale (10–100 Å). The results can be explained by two ideas: (1) decrease of the structural disorder in atomic scale causes increase of the disorder in mesoscopic scale; (2) the mesoscale disorder remains for a long time at room temperature but reduces rapidly at the annealing temperature.