A reddish orange-emitting stoichiometric phosphor K3Eu(PO4)(2) for white light-emitting diodes

作者：Ju, Guifang; Hu, Yihua^*; Chen, Li; Wang, Xiaojuan; Mu, Zhongfei; Wu, Haoyi; Kang, Fengwen

来源：Optics and Laser Technology, 2012, 44(1): 39-42.

DOI：10.1016/j.optlastec.2011.05.013

• WLED
• Phosphate
• Stoichiometric phosphor

A series of Eu3 activated K3Y1-xEux(PO4)(2) phosphors were synthesized by the solid-state reaction method. The structures and photoluminescent properties of these phosphors were investigated at room temperature. The results of XRD patterns indicate that these phosphors are isotypic to the monoclinic K3Y(PO4)(2) or K3Eu(PO4)(2). The excitation spectra indicate that these phosphors can be effectively excited by near UV (370-410 nm) light. The orange emission from transition D-5(0)-F-7(1) is dominant, and the peak value ratio of D-5(0)-F-7(1)/D-5(0)-F-7(2) is 1.44. The emission spectra exhibit strong reddish orange performance (CIE chromaticity coordinates: x = 0.63, y = 0.36), which is due to the D-5(0)-F-7(J) transitions of Eu3 ions. The relationship between the structure and the photoluminescent properties of the phosphors was studied. The absence of concentration quenching of Eu3 was observed in K3Y1-xEux(PO4)(2). K3Eu(PO4)(2) has potential application as a phosphor for white light-emitting diodes.

• 出版日期2012-2
• 单位广东工业大学