EXCITONIC MOLECULE BOUND TO ISOELECTRONIC TRAP NITROGEN IN GALLIUM PHOSPHIDE

Two sets of sharp emission lines associated with the photoluminescence spectrum of the isoelectronic trap nitrogen in GaP are unambiguously identified as the recombination radiation of a second exciton bound to this center with an energy of ∼ 10 meV. This is the first observation of an excitonic molecule bound to a defect. © 1969.