Open AccessLuminescence properties, crystal structure and LED package of potential blue-emitting phosphors - Ca_2BN_2F:Eu^2+
Author(s) -
YiChen Chiu,
WeiRen Liu,
ChienHao Huang,
YaoTsung Yeh,
ShyueMing Jang
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.027361
Subject(s) - phosphor , orthorhombic crystal system , materials science , luminescence , light emitting diode , excitation , ion , crystal structure , thermal stability , quenching (fluorescence) , optoelectronics , analytical chemistry (journal) , optics , chemistry , fluorescence , crystallography , physics , organic chemistry , chromatography , quantum mechanics
A blue-emitting phosphor - Ca2BN2F:Eu2+ was synthesized by a solid state reaction. Ca2BN2F crystallizes in the orthorhombic system with space group Pnma (No. 62) and Z = 4. The Ca2BN2F:Eu2+ exhibites broad emission and excitation bands corresponding to the allowed f→d electronic transition of Eu2+. Concentration quenching of Eu2+ emission was observed for 1 mol% due to the energy transfer between Eu2+ ions via electric multipolar interaction with the critical transfer distance of about 25.11 Å. In addition, the thermal stability and applications of blue-emitting Ca2BN2F:Eu2+ phosphors in n-UV LED have been firstly discussed in this study. The preliminary data demonstrate that the novel blue-emitting phosphor exhibits the potential to be an n-UV convertible phosphor.