Synthesis, Luminescence Property and Thermal Quenching Investigation of Eulytite-type Orthophosphates Ba7Hf(PO4)6:Eu3+ Phosphor. (18th October 2019)

• Record Type: Journal Article
• Authors: Wang, Chuang; Li, Ying; Jiang, Jing; Li, Zhuowei; Zhu, Ge; Xin, Shuangyu
• Is Part Of: ECS journal of solid state science and technology. Volume 8:Number 11(2019)
• Page Start: R133
• Page End: R137
• Publication Date: 2019-10-18
• Subjects: Luminescence -- Eulytite-type orthophosphates -- phosphor -- rare-earth; Solid state chemistry -- Periodicals; Electronics -- Materials -- Periodicals; Electrochemistry -- Periodicals; 541.0421
• DOI: 10.1149/2.0011911jss
• Languages: English
• ISSNs: 2162-8777

Abstract

Abstract : Eulytite-type orthophosphates Ba7 Hf(PO4 )6 :Eu 3+ were successfully synthesized by solid state reaction method. The analysis of the X-ray diffraction patterns confirmed that all of the Ba7 Hf(PO4 )6 :Eu 3+ phosphors are single phase. The striking luminescent properties of the obtained Ba7 Hf(PO4 )6 :Eu 3+ samples were investigated and discussed clearly by photoluminescence spectra, photoluminescence excitation spectra, decay curves and temperature dependent emission spectra. The results illustrated that Ba7 Hf(PO4 )6 :Eu 3+ phosphors could be strongly excited by 394 nm radiation and exhibited a quite satisfactory red light peaked at 593 and 613 nm. To gain further insight into the energy transfer mechanism, the spectra depending on Eu 3+ concentration as well as Uitert equation between Eu 3+ ions was calculated and investigated. The results indicated that quadrupole–quadrupole interaction dominated the energy transfer process between Eu 3+ ions. Moreover, the thermal stability of Ba7 Hf(PO4 )6 :Eu 3+ and Y2 O3 :Eu 3+ was comparable and the luminescence mechanism was also discussed by configurational coordinate diagram in detail.