Versatile phosphors BaY2Si3O10:RE (RE = Ce3+, Tb3+, Eu3+) for light-emitting diodes.
Rare-earth-activated BaY(2)Si(3)O(10) (BYSO) phosphors were synthesized via a solid-state reaction. BaY(2)Si(3)O(10):Ce(3+) yields an indigo-blue emission peak at 404 nm according to excitation at 334 nm attributed to the Ce(3+) 4f-->5d transition. BaY(2)Si(3)O(10):Tb(3+) typically generates green emission peaks resulting from the 5D4-->7FJ transition. BaY(2)Si(3)O(10):Eu(3+) exhibits red emission peaks upon excitation at 393 nm. The quantum efficiency of these phosphors was found to be 53%, 55%, and 63% of commodity. The results in this work demonstrate that these phosphors with new compositions are good candidate luminescent materials for use in plasma display panels and light-emitting diodes, excited from VUV to UV.
Liu
Wei-Ren
WR
Material and Chemical Research Laboratories, ITRI, Hsinchu 300, Taiwan, ROC.
Lin
Chun Che
CC
Chiu
Yi-Chen
YC
Yeh
Yao-Tsung
YT
Jang
Shyue-Ming
SM
Liu
Ru-Shi
RS
Cheng
Bing-Ming
BM
D017609:Barium Compounds / Q000138:chemical synthesis*; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008029:Lighting / Q000295:instrumentation*; D049408:Luminescent Agents / Q000138:chemical synthesis*; D015203:Reproducibility of Results; D012666:Semiconductors; D012680:Sensitivity and Specificity
D017609:Barium Compounds; D049408:Luminescent Agents