title: A novel red emitting phosphor of Eu(3+) doped Sr2La2MgW2O12 for white light emitting diodes.
abstract: In this paper, we reported a series of Eu(3+) activated Sr2La2MgW2O12 phosphors synthesized by the solid state reaction method. X-ray diffraction analysis revealed that Sr2La2MgW2O12 doped with Eu(3+) was pure phase. Upon the 464 nm light excitation, Sr2La2MgW2O12:Eu(3+) phosphors exhibited a red emission centered at 613 nm, originated from the (5)D0-(7)F2 transition of Eu(3+) ions. The optimum concentration of Eu(3+) for the highest luminescence was found to be 20 mol%, and the critical distance was calculated to be 11.98Å. The Commission International de l'Eclairage (CIE) chromaticity coordinate of Sr2La1.8MgW2O12:0.20Eu(3+) was (x=0.626, y=0.374), which was closed to the standard of NTSC (x=0.670, y=0.330). The results indicated that Sr2La2MgW2O12:Eu(3+) could be a potential red phosphor for white light-emitting diodes (WLEDs).
authors.affiliation: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
authors.forename: Jun
authors.initials: J
authors.lastname: Huang
authors.affiliation: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, PR China. Electronic address: yispgd@163.com.
authors.forename: Shuangping
authors.initials: S
authors.lastname: Yi
authors.affiliation: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
authors.forename: Yaomin
authors.initials: Y
authors.lastname: Deng
authors.affiliation: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
authors.forename: Jieqiang
authors.initials: J
authors.lastname: Xian
authors.affiliation: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
authors.forename: Lu
authors.initials: L
authors.lastname: Zhang
keywords: LED; Phosphor; Photoluminescence