Optical emission characteristics of (Cu, Ag)In(Se, Te)2 pentenary alloys

Chalcopyrite alloys with the composition (Cu (1−x) Ag x )In(Se (1−z) Te z ) 2 have been synthesized and characterized. X-ray powder-diffraction measurements show well-defined single-phase material at each composition, verifying complete miscibility. Lattice parameters and differential-thermal-analyser-determined phase-transition temperatures vary smoothly throughout the composition range. Luminescence measurements have been obtained for a large …