Abstract
Sodium was incorporated into high-purity ZnSe single crystals by dipping the crystal into molten Se-base Na alloys. The I1Na line and two types of donor-acceptor pair (DAP) emissions were observed. An acceptor binding energy of 117 meV was obtained for Na by analyzing the selective photoluminescence spectra on the I1Na line and the excitation intensity dependence of the peak energy of DAP emissions. It is confirmed that the P emission observed in DAP emission is due to the recombination between the Na acceptor and Ga donor.
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