Abstract
Photoluminescence spectra of silver-doped ZnSe grown by molecular beam epitaxy were studied at 4.2 K. The silver-related peaks were observed at 2.726 eV with phonon replicas and are thought to be due to the radiative recombination of donor-to-silver-acceptor (D-A) emission. The shallow acceptor level of silver in ZnSe is found, and its level is estimated to be about 71 meV from the peak energy of donor-acceptor emission, which would be consistent with the activation energy of thermal quenching of the D-A emission.
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