Luminescence properties of Eu2+ and Ce3+ in Na5Ca2Al(PO4)4 produced by the combustion-assisted synthesis method

• Published in: Journal of non-crystalline solids 2014-04, Vol.389, p.46-49
• Main Authors: Fen, Zhang, Wanjun, Tang
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Energy transfer; Exact sciences and technology; Materials science; Materials synthesis; materials processing; Na5Ca2Al(PO4)4; Optical material; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Photoluminescence; Physics
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/j.jnoncrysol.2014.02.005

New greenish-blue luminescence Eu2+/Ce3+ codoped Na5Ca2Al(PO4)4 phosphors were prepared by a combustion-assisted synthesis method. X-ray powder diffraction analysis confirmed the formation of Na5Ca2Al(PO4)4 host lattice.. The Eu2+-doped Na5Ca2Al(PO4)4 sample has an efficient greenish-blue emission band that peaks at 476nm, while Ce3+-doped Na5Ca2Al(PO4)4 sample exhibits a strong emission band at 391nm. Efficient energy transfer from Ce3+ to Eu2+ occurs due to the large spectral overlap between the emission of Ce3+ and excitation of Eu2+. Co-doping Ce3+ enhances the emission intensity of Eu2+ greatly by transferring its excitation energy to Eu2+, and Ce3+ plays a role as a sensitizer. Ce3+/Eu2+ co-doped Na5Ca2Al(PO4)4 can possibly be applied as greenish-blue phosphors in the fields of lighting and display. •Eu2+/Ce3+ codoped Na5Ca2Al(PO4)4 phosphor was prepared.•XRD analysis revealed that single-phase Na5Ca2Al(PO4)4 was obtained.•Efficient energy transfer from Ce3+ to Eu2+ in Na5Ca2Al(PO4)4 is observed.•We report greenish-blue phosphors in the fields of lighting and display.