Abstract

From measurements of photoconductivity on low conductivity ``pure'' cadmium sulfide single crystals, and on high conductivity cadmium sulfide crystals with chloride impurity, values for the following characteristic photoconductivity quantities have been obtained: (1) concentration of levels in the forbidden gap, (2) energy distribution of such levels, (3) attempt-to-escape frequency for electrons in traps, (4) capture cross section of traps, (5) capture cross section of recombination centers, (6) mobility for electron charge carriers, and (7) binding energy for the electron held in an orbit around the chloride ion in conducting crystals.

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