Heat flux effect on photoenhanced and dark silver motion in a thin As₂S₃ layer

Abstract

The influence of a heat flux on the rate of photoenhanced and dark Ag transfer in the lightsensitive thin layer As₂S₃-Ag structure was investigated. It was found that the Ag flux increased when a heat flux had the same direction and fell down when the heat flux had an opposite direction. The changes of Ag flux were proportional to a power of the heat flux caused by some temperature difference on the structure surfaces. Coupling between Ag and heat fluxes was described phenomenologically using a generalized mass transfer equation, but the obtained results did not enable to deduce an explicit micromechanism of such interaction. Tentatively, a phonon drag mechanism seems to be more preferable among the known ones, when explaining the Soret effect in this structure.