title: Eu2+ and Mn2+ codoped Ba2Mg(BO3)2--new red phosphor for white LEDs.
abstract: A new red phosphor, Ba(2)Mg(BO(3))(2):Eu,Mn, was synthesized by the solid-state reaction method and its photoluminescence properties were investigated by excitation and emission spectra and decay curves. Its excitation band is extending from 250-450 nm, which is adaptable to the emission band of near-ultraviolet LED chips (350-420 nm). Upon the excitation of 365 nm light, the phosphor exhibits strong red emission centered at 615 nm. The relationship between Eu(2+) and Mn(2+) dopants was studied from the viewpoint of a crystal structure and by photoluminescence spectra and decay curves. The results show that the characteristic Eu(2+) emission predominate in the emission band and Mn(2+) promote the redistribution of Eu(2+) at the cation sites of the host crystal.
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Shuanglong
authors.initials: S
authors.lastname: Yuan
authors.forename: Yunxia
authors.initials: Y
authors.lastname: Yang
authors.forename: Xianghua
authors.initials: X
authors.lastname: Zhang
authors.forename: Franck
authors.initials: F
authors.lastname: Tessier
authors.forename: François
authors.initials: F
authors.lastname: Cheviré
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Adam
authors.forename: Bernard
authors.initials: B
authors.lastname: Moine
authors.forename: Guorong
authors.initials: G
authors.lastname: Chen