Luminescent Characteristics of Blue-emitting (Sr_(1-x)Ca_x) S:Cu, F Solid Solution TFEL Devices

摘要

(Sr_(1-xCa_x)S:Cu,F solid solution thin films were deposited using solid solution evaporation source by electron beam evaporation and then annealed at 900℃ in Ar or H_2S by rapid thermal annealing (RTA). The shifts toward to higher 2 8 of XRD peaks and shorter wavelength of PL spectra with increasing x were obtained successfully. H_2S flow induces Sr lack, and Cu~+-Cu~+ dimer center was formed. As a result, the PL peak at around 530nm appeared.