A novel red emitting phosphor of Eu3+ doped Sr2La2MgW2O12 for white light emitting diodes

作者：Huang, Jun; Yi, Shuangping^*; Deng, Yaomin; Xian, Jieqiang; Zhang, Lu

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2015, 148: 324-327.

DOI：10.1016/j.saa.2015.04.009

• LED
• Phosphor
• Photoluminescence

In this paper, we reported a series of Eu3+ activated Sr2La2MgW2O12 phosphors synthesized by the solid state reaction method. X-ray diffraction analysis revealed that Sr2La2MgW2O12 doped with Eu3+ was pure phase. Upon the 464 nm light excitation, Sr2La2MgW2O12:Eu3+ phosphors exhibited a red emission centered at 613 nm, originated from the D-5(0)-F-7(2) transition of Eu3+ ions. The optimum concentration of Eu3+ for the highest luminescence was found to be 20 mol%, and the critical distance was calculated to be 11.98 angstrom. 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:Eu3+ could be a potential red phosphor for white light-emitting diodes (WLEDs).

• 出版日期2015-9-5
• 单位广东工业大学