Annealing studies of cadmium telluride and zinc telluride implanted with ytterbium

Add time:08/01/2019    Source:sciencedirect.com

Isochronal annealing studies of ytterbium-implanted cadmium telluride and ytterbium-implanted zinc telluride have been made by monitoring the cathodoluminescence emission spectra at 77 K. The Yb3+ ions become optically active after annealing at 130°C and 220°C in cadmium telluride and zinc telluride respectively. The relative intensities of the sharp Yb3+ lines in the emission spectra produced depend markedly on the temperature of the isochronal annealing. Different types of Yb3+ centre have been distinguished and interpreted, with the aid of correlated electron radiation damage studies of zinc telluride, on the basis of the conversion, by annealing, of ytterbium at interstitial sites to ytterbium at substitutional sites.

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