Controlled synthesis and luminescent properties of Eu{sup 2+}(Eu{sup 3+}), Dy{sup 3+}-doped Sr{sub 3}Al{sub 2}O{sub 6} phosphors by hydrothermal treatment and postannealing approach
- School of Chemical Engineering, Anhui Key Laboratory of Controllable Chemistry Reaction and Material Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009 (China)
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, Anhui 230009 (China)
In this work, Sr{sub 3}Al{sub 2}O{sub 6}: Eu{sup 2+} (Eu{sup 3+}), Dy{sup 3+} phosphors have been prepared by hydrothermal treatment and subsequently postannealing approach, using Sr(NO{sub 3}){sub 2}, Al(NO{sub 3}){sub 3}.9H{sub 2}O, and CO(NH{sub 2}){sub 2} as starting materials. The as-obtained phosphors were characterized by means of XRPD, FESEM, and PL techniques. In addition, many reaction parameters were studied in detail, including the initial mole ratios, hydrothermal reaction temperature, calcination temperature and calcination atmosphere. Remarkably, two scientific merits exist herein: Sr{sub 3}Al{sub 2}O{sub 6}: Eu{sup 2+} (Eu{sup 3+}), Dy{sup 3+} phosphors can be selectively obtained in a reducing atmosphere (H{sub 2}/Ar, 20%+80%) and in air, respectively; adding certain amount of sodium citrate can alter the shape and size of Sr{sub 3}Al{sub 2}O{sub 6}: Eu{sup 2+} (Eu{sup 3+}), Dy{sup 3+} phosphors in essence. Besides, the luminescent properties of Sr{sub 3}Al{sub 2}O{sub 6}: Eu{sup 2+} (Eu{sup 3+}), Dy{sup 3+} phosphors were studied by excitation spectra, emission spectra and decay curves. - Graphical abstract: We present a simple and efficient hydrothermal treatment and subsequently postannealing approach to prepare Sr{sub 3}Al{sub 2}O{sub 6}: Eu{sup 2+} (Eu{sup 3+}), Dy{sup 3+} phosphors on a large scale.
- OSTI ID:
- 21483666
- Journal Information:
- Journal of Solid State Chemistry, Vol. 183, Issue 9; Other Information: DOI: 10.1016/j.jssc.2010.04.008; PII: S0022-4596(10)00141-6; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM NITRATES
ARGON
CALCINATION
CITRATES
DOPED MATERIALS
DYSPROSIUM IONS
EMISSION SPECTRA
EUROPIUM IONS
EXCITATION
HYDROGEN
HYDROTHERMAL SYNTHESIS
LUMINESCENCE
PHOSPHORS
SODIUM COMPOUNDS
STRONTIUM NITRATES
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
CARBOXYLIC ACID SALTS
CHARGED PARTICLES
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
EMISSION
ENERGY-LEVEL TRANSITIONS
FLUIDS
GASES
IONS
MATERIALS
NITRATES
NITROGEN COMPOUNDS
NONMETALS
OXYGEN COMPOUNDS
PHOTON EMISSION
PYROLYSIS
RARE GASES
SPECTRA
STRONTIUM COMPOUNDS
SYNTHESIS
THERMOCHEMICAL PROCESSES