Luminescence of YPO[sub 4]:Zr and YPO[sub 4]:Zr,Mn under Vacuum Ultraviolet Excitation

Abstract

Novel UV and blue phosphors, and , respectively, are synthesized and investigated. shows the emission about assigned to the charge transfer transition of O-Zr. The excitation spectrum of the emission has main band peaked at . The codoped phosphor shows the emission peaked at assigned to the d-d transition of within configuration. The excitation bands of the blue emission are around 152 and . does not show any emission and the emission observed for is diminished for . It is suggested that Zr plays an important role in the excitation of the Mn blue emission of . The emission wavelength of is remarkably short compared with the usual activated phosphors.