KBaBP2O8:Tm 3+: a novel blue-emitting phosphor with high color purity
B. Han, J. Zhang, P. Li, H. Shi
School of Material and Chemical Engineering, Zhengzhou University of Light Industry,
450002 Zhengzhou, China
Abstract
A series of novel blue emitting
K1+xBa1-2xTmxBP2O8 () phosphors
were synthesized by a solid-state reaction at high-temperature for the
first time. The phase
purity and photoluminescence properties were investigated by X-ray diffraction
(XRD)
and fluorescence spectroscopy (FS) measurements, respectively. The influence of the
doping concentration of Tm3+ on its relative emission intensity was investigated, and
the critical distance was calculated. The as-prepared phosphor can be effectively
excited with a 356 nm light, and exhibit blue emission at 457 nm with high color
purity. The above work indicates this phosphor could be a potential candidate as blue
emitting phosphor for application in white light-emitting diodes.