title: Red/blue-shift dual-directional regulation of α-(Ca, Sr)2SiO4:Eu(2+) phosphors resulting from the incorporation content of Eu(2+)/Sr(2+) ions.
abstract: In this work, tunable emission from green to red and the inverse tuning from red to green in α-(Ca, Sr)2SiO4:Eu(2+) phosphors were demonstrated magically by varying the incorporation content of Eu(2+) and Sr(2+) ions, respectively. The tunable emission properties and the tuning mechanism of red-shift resulting from the Eu(2+) content as well as that of blue-shift induced by the Sr(2+) content were investigated in detail. As a result of fine-controlling the incorporation content of Eu(2+), the emission peak red-shifts from 541 nm to 640 nm. On the other hand, the emission peak inversely blue-shifts from 640 nm to 546 nm through fine-adjusting the incorporation content of Sr(2+). The excellent tuning characteristics for α-(Ca, Sr)2SiO4:Eu(2+) phosphors presented in this work exhibited their various application prospects in solid-state lighting combining with a blue chip or a near-UV chip.
authors.affiliation: School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P.R. China. mzhy1984@163.com djwang@tjut.edu.cn.
authors.forename: Zhijuan
authors.initials: Z
authors.lastname: Lu
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Mao
authors.forename: Jingjing
authors.initials: J
authors.lastname: Chen
authors.forename: Dajian
authors.initials: D
authors.lastname: Wang