Effect of Stress on CdS Single Crystals

Le résumé fourni par la source

The electrical and luminescence properties of CdS crystals, which show the phenomenon of storage, have been studied as a function of hydrostatic pressure and uniaxial stress. In the excited state, uniaxial stress applied parallel to the $c$ axis resulted in an irreversible increase of six orders of magnitude in the resistance. Uniaxial stress applied perpendicular to the $c$ axis and hydrostatic pressure had no effect on the resistance. While uniaxial stress was being applied to the crystal in the low-resistivity state, luminescence was observed. The integrated intensity was independent of the rate of application of the stress over a range of ten to one, and the luminescence consisted of the characteristic green-edge emission and a red luminescence centering at about 6600 \AA{}. At room temperature, the decay constant of the photocurrent increased with hydrostatic pressure.

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