1. Luminescence of YPO[sub 4]:Zr and YPO[sub 4]:Zr,Mn under Vacuum Ultraviolet Excitation
- Author
-
Masami Kaneyoshi and Eiichiro Nakazawa
- Subjects
Materials science ,Renewable Energy, Sustainability and the Environment ,Analytical chemistry ,Phosphor ,Condensed Matter Physics ,Blue emission ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Vacuum ultraviolet ,Wavelength ,Materials Chemistry ,Electrochemistry ,Luminescence ,Excitation - Abstract
Novel UV and blue phosphors, YPO 4 :Zr and YPO 4 :Zr,Mn, respectively, are synthesized and investigated. YPO 4 :Zr shows the emission about 290 nm assigned to the charge transfer transition of O-Zr. The excitation spectrum of the emission has main band peaked at 175 nm. The codoped phosphor YPO 4 :Zr,Mn shows the emission peaked at 477 nm assigned to the d-d transition of Mn 2 + within 3d 5 configuration. The excitation bands of the blue emission are around 152 and 193 nm. YPO 4 :Mn does not show any emission and the 290 nm emission observed for YPO 4 :Zr is diminished for YPO 4 :Zr,Mn. It is suggested that Zr plays an important role in the excitation of the Mn blue emission of YPO 4 :Zr,Mn. The emission wavelength of YPO 4 :Zr,Mn is remarkably short compared with the usual Mn 2 + activated phosphors.
- Published
- 2005
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