Title of article
A novel blue-emitting silica-coated KBaPO4:Eu2+ phosphor under vacuum ultraviolet and ultraviolet excitation
Author/Authors
WON BIN IM، نويسنده , , Hyoung Sun Yoo، نويسنده , , Sivakumar Vaidyanathan، نويسنده , , Ki Hyuk Kwon، نويسنده , , Hyung Jun Park، نويسنده , , Yong-Il Kim، نويسنده , , DUK YOUNG JEON، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2009
Pages
4
From page
161
To page
164
Abstract
An intense blue-emitting phosphor KBaPO4:Eu2+ was synthesized by a solid-state reaction method. The crystal structure of KBaPO4:Eu2+ was refined using neutron diffraction data by Rietveld refinement for the first time. KBa0.99Eu0.01PO4 composition shows intense blue emission (peak wavelength, 420 nm) with relative intensity vs commercial BaMgAl10O17:Eu2+ blue phosphor (Nichia) 65%, 122% and 108% under 147, 254 and 365 nm excitation, respectively. In addition, by applying a nano-sized silica coating on the phosphor surface, excellent moisture resistance of KBP:Eu2+ was obtained. Due to its intense blue emission and excellent color purity (0.1606, 0.0271), it is very potent as a blue-emitting phosphor for PDPs, CCFLs, and pc-white LEDs based on near UV LED.
Keywords
Luminescence , Optical materials , Neutron scattering and diffraction , Coatings
Journal title
Materials Chemistry and Physics
Serial Year
2009
Journal title
Materials Chemistry and Physics
Record number
1058544
Link To Document