title: ZnB2O4:Bi3+,Eu3+:a highly efficient, red-emitting phosphor.
abstract: The novel red phosphor of Eu(3+)-Bi(3+) co-activated ZnB(2)O(4) was prepared by a solid-state reaction. The composition-optimized (Zn(0.9)Eu(0.1))B(2)O(4) phosphor exhibits a dominant emission peak at 610 nm ((5)D(0)-(7)F(2)) with CIE coordinates of (0.63, 0.36) under the excitation at 393 nm. By co-doping Bi(3+) ions in ZnB(2)O(4):Eu(3+), the emission intensity and quantum efficiency can be efficiently enhanced by an increment of 14% and 6%, respectively. The luminescence performance and thermal stability of (Zn(0.8)Bi(0.1)Eu(0.1))B(2)O(4) phosphor were found to be superior to that of the commodity phosphor, La(2)O(2)S:Eu(3+). The red-emitting borate phosphor may be potentially useful in the fabrication of white light-emitting diodes (LEDs).
authors.affiliation: Material and Chemical Research Laboratories, ITRI, Hsinchu 300, Taiwan, ROC.
authors.forename: Wei-Ren
authors.initials: WR
authors.lastname: Liu
authors.forename: Chun Che
authors.initials: CC
authors.lastname: Lin
authors.forename: Yi-Chen
authors.initials: YC
authors.lastname: Chiu
authors.forename: Yao-Tsung
authors.initials: YT
authors.lastname: Yeh
authors.forename: Shyue-Ming
authors.initials: SM
authors.lastname: Jang
authors.forename: Ru-Shi
authors.initials: RS
authors.lastname: Liu