Optical and photoelectric properties of ZnSe: Ti crystals
The photoconductivity and photoluminescence of ZnSe : Ti crystals in the visible and IR-region of spectrum are investigated. It is shown that high-temperature impurity photoconductivity of ZnSe : Ti crystals is caused by the optical transitions of electrons from the basic state <sup>3</sup>A<sub>2</sub>(F) to excited high-energy levels of Ti<sup>2+</sup> ion with their subsequent thermal activation in the conduction band. The photoconductivity line conditioned by the photoionization of Ti impurity is founded. The effective excitation of ZnSe : Ti crystals intracenter luminescence is carried out by the light from the own absorption range of Ti<sup>2+</sup> ions.