Abstract
Abstract By using very low excitation densities in low temperature luminescence studies on GaP very narrow donor-acceptor pair bands were obtained. This has resulted in clear phonon replication patterns, including new replications, of the no-phonon pair bands in ‘green pair’ luminescence involving donors at P and Ga-sites. In the ‘red-orange’ luminescence involving the deep Sip-acceptor structure is observed, which is identified with the no-phonon pair band and its phonon replicas.
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