title: Photoluminescence characterization of Ca10Na(PO4)7:Eu3+ red-emitting phosphor.
abstract: Eu3+-doped Ca10Na(PO4)7 phosphors were successfully synthesized by solid-state reaction techniques. Their structures and photoluminescence characteristics were carefully studied. An efficient red emission under near-ultraviolet excitation is observed. The maximum intensity of luminescence was observed at the Eu3+ concentration around 9 mol%. The quadrupole-quadrupole interaction between Eu3+ ions is the dominant mechanism for concentration quenching of fluorescence emission from Eu3+ ions in Ca10-xNa(PO4)7:xEu3+. Due to the excitation spectrum is well coupled with near UV light, Ca10-xNa(PO4)7:xEu3+ phosphors have potential application as red phosphors in near UV chip-based white light emitting diodes.
authors.affiliation: School of Physics & Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, GuangDong 510006, PR China.
authors.forename: Xihua
authors.initials: X
authors.lastname: Dou
authors.forename: Weiren
authors.initials: W
authors.lastname: Zhao
authors.forename: Enhai
authors.initials: E
authors.lastname: Song
authors.forename: Guoxiong
authors.initials: G
authors.lastname: Zhou
authors.forename: Chunyu
authors.initials: C
authors.lastname: Yi
authors.forename: Mingkang
authors.initials: M
authors.lastname: Zhou
mesh_terms: D002118:Calcium / Q000737:chemistry*; D018360:Crystallography, X-Ray; D005063:Europium / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods*; D010710:Phosphates / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry*; D012964:Sodium / Q000737:chemistry*; D013057:Spectrum Analysis; D013816:Thermodynamics
chemical_list: D010710:Phosphates; D010758:Phosphorus; D005063:Europium; D012964:Sodium; D002118:Calcium