Preferential donor–acceptor pairing results for ZnSe:Na

Preferential pairing between donors and acceptors, which results from the Coulomb attraction between ionized donors and acceptors, has frequently been suggested, but has been very difficult to establish conclusively. We here report definitive identification of such preferential pairing, from donor-a...

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Bibliographic Details
Published in:Applied physics letters 1994-02, Vol.64 (8), p.1027-1029
Main Authors: Radomsky, L., Yi, G.-J., Neumark, G. F.
Format: Article
Language:English
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Summary:Preferential pairing between donors and acceptors, which results from the Coulomb attraction between ionized donors and acceptors, has frequently been suggested, but has been very difficult to establish conclusively. We here report definitive identification of such preferential pairing, from donor-acceptor pair luminescence. We observed identical close pair lines (both in location and in relative intensity) in two samples of Na-doped ZnSe, but the associated distant pair peak was observed at different energies in the two samples. We explain this by assuming that there is strong preferential pairing in one sample and weak or random pairing in the other.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.110959