ZNSE1-XTEX SOLID-SOLUTIONS

ZnSe1-xTex solid solutions doped with Cu and Cl have been synthesized from ZnSe and ZnTe powders. The defect structure, solubility of dopant s and photoluminescence at UV and X-ray excitation have been investiga ted. At 300 K materials with x = 0-0.3 show intense donor-acceptor pai r photoluminescence bands with peaks in the region of 1.89 to 1.57 eV. The maximum photoluminescence intensity in ZnSe1-xTex:Cu:Cl solid sol utions formed after a slow cooling thermal treatment has been achieved near 0.06 at% Cu. Interstitial tellurium as a self-activated or donor -acceptor pair photoluminescence band killer for zinc and cadmium tell urides has been proposed.