Synthesis of Gd{sub 3}PO{sub 7}:Eu{sup 3+} nanospheres via a facile combustion method and optical properties
- Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033 (China)
Eu{sup 3+}-doped Gd{sub 3}PO{sub 7} nanospheres with an average diameter of {approx}300 nm and a narrow size distribution have been prepared by a facile combustion method and structurally characterized by X-ray diffraction and field emission scanning electron microscopy. The luminescent properties were systemically studied by the measurement of excitation/emission spectra, and emission spectra under different temperatures, as well as by photostability. The strong red-emission intensity peaking at 614 nm originates the {sup 5}D{sub 0}{yields}{sup 7}F{sub 2} transition and is observed under 254-nm irradiation, indicating that Eu{sup 3+} ions in Gd{sub 3}PO{sub 7} mainly occupied non-centrosymmetry sites. The CIE1931 XY chromaticity coordinates of Gd{sub 3}PO{sub 7}:Eu{sup 3+} nanospheres are (x=0.654, y=0.345) in the red area, which is near the National Television Standard Committee standard chromaticity coordinates for red. Thus, Gd{sub 3}PO{sub 7}:Eu{sup 3+} nanospheres may be potential red-emitting phosphors for PDP and Xe-based mercury-free lamps. - Graphical abstract: SEM image of as-prepared Gd{sub 3}PO{sub 7}:Eu{sup 3+} nanospheres. Display Omitted.
- OSTI ID:
- 21128239
- Journal Information:
- Journal of Solid State Chemistry, Vol. 181, Issue 4; Other Information: DOI: 10.1016/j.jssc.2008.01.013; PII: S0022-4596(08)00029-7; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
Similar Records
Photoluminescence of Eu{sup 3+}-doped triple phosphate Ca{sub 8}MgR(PO{sub 4}){sub 7} (R=La, Gd, Y)
Preparation and spectroscopic properties of rare-earth (RE) (RE = Sm, Eu, Tb, Dy, Tm)-activated K{sub 2}LnZr(PO{sub 4}){sub 3} (Ln = Y, La, Gd and Lu) phosphate in vacuum ultraviolet region