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Mursakulov, Niyazi N.
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article
RBS-channeling study of radiation damage in Ar+ implanted CuInSe2 crystals
Abstract
Chalcopyrite solar cells are reported to have a high tolerance to irradiation by high energy electrons or ions, but the origin of this is not well understood. This work studies the evolution of damage in Ar + -bombarded CuInSe 2single crystal using Rutherford backscattering/channeling analysis. Ar +ions of 30 keV were implanted with doses in the range from 10 12to 3 × 10 16cm -2at room temperature. Implantation was found to create two layers of damage: (1) on the surface, caused by preferential sputtering of Se and Cu atoms; (2) at the layer of implanted Ar, possibly consisting of stacking faults and dislocation loops. The damage in the second layer was estimated to be less than 2% of the theoretical prediction suggesting efficient healing of primary implantation defects.