TY - JOUR
T1 - Preparation and luminescence of blue-emitting phosphor Ca 2PO4Cl
T2 - Eu2+ for n-UV white LEDs
AU - Yu, Ruijin
AU - Guo, Chongfeng
AU - Li, Ting
AU - Xu, Yan
PY - 2013/7
Y1 - 2013/7
N2 - A series of blue-emitting Ca2 - xEuxPO4Cl phosphors were synthesized by a solid state method in a reducing atmosphere. The factors those affect the structure and the photoluminescence (PL) intensities of phosphors, including the dosage of chlorine source CaCl2, reaction time and annealing temperature, have been investigated in detail. X-ray diffraction (XRD) and photoluminescence measurements were performed to testify the crystal structure and luminescent properties. The optimal Eu2+ concentration was determined, and the mechanism of the concentration quenching was predominated by dipole-dipole interaction. The present phosphor exhibits a strong absorption in the near-UV region, emits an intense blue emission centered at 451 nm and presents excellent thermal stability, suggesting that the phosphor is competitive as a promising blue-emitting phosphor for near ultraviolet (n-UV) light-emitting diodes (LEDs).
AB - A series of blue-emitting Ca2 - xEuxPO4Cl phosphors were synthesized by a solid state method in a reducing atmosphere. The factors those affect the structure and the photoluminescence (PL) intensities of phosphors, including the dosage of chlorine source CaCl2, reaction time and annealing temperature, have been investigated in detail. X-ray diffraction (XRD) and photoluminescence measurements were performed to testify the crystal structure and luminescent properties. The optimal Eu2+ concentration was determined, and the mechanism of the concentration quenching was predominated by dipole-dipole interaction. The present phosphor exhibits a strong absorption in the near-UV region, emits an intense blue emission centered at 451 nm and presents excellent thermal stability, suggesting that the phosphor is competitive as a promising blue-emitting phosphor for near ultraviolet (n-UV) light-emitting diodes (LEDs).
KW - LED
KW - Luminescence
KW - Phosphor
UR - http://www.scopus.com/inward/record.url?scp=84875301472&partnerID=8YFLogxK
U2 - 10.1016/j.cap.2012.12.020
DO - 10.1016/j.cap.2012.12.020
M3 - Article
AN - SCOPUS:84875301472
SN - 1567-1739
VL - 13
SP - 880
EP - 884
JO - Current Applied Physics
JF - Current Applied Physics
IS - 5
ER -