PHOTOLUMINESCENCE OF GaP(N, Te, Zn) UNDER HYDROSTATIC PRESSURE

Photoluminescence spectrum of Gap ( N, Te , Zn ) under hydrostatic pressure was measured at 77K. Pressure coefficients for Te donor level as well as energy levels of excitons bound to N, NN₁, NN₃, and neutral donor Te were obtained. The pressure shifts of these levels were discussed. The zero phonon line of free exciton in Gap was observed for the first time.