Abstract
A summary of published results on electron energy threshold measurements in II–VI compounds, and their interpretation in terms of damage on the metal and chalcogenide sublattices, is given. EPR results in irradiated II–VI compounds are also reviewed. These include the F+ center in ZnS; ZnO, and BeO and new results on the zinc vacancy (V) in ZnSe. For the zinc vacancy, optical absorption bands at 4680Å and 8850Å are identified with V and a band at 5000Å is tentatively assigned to V. The activation energy for anneal of the vacancy is measured to be 1.26±.06 eV, and this is tentatively identified as the activation energy for vacancy motion. An EPR spectrum produced in a 20.4 °K irradiation is tentatively identified as a zinc vacancy-interstitial pair. Complete annealing occurs for this defect in the range 60–100 °K.

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