Controllable synthesis and tunable luminescence of glass ceramic containing Mn{sup 2+}:ZnAl{sub 2}O{sub 4} and Pr{sup 3+}:YF{sub 3} nano-crystals

Journal Article · Fri Jan 15 00:00:00 EST 2016 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.08.029· OSTI ID:22584250

Yu, Yunlong; Li, Xiaoyan

Highlights: • Glass ceramic containing ZnAl{sub 2}O{sub 4} and YF{sub 3} nano-crystals is fabricated. • Mn{sup 2+} and Pr{sup 3+} are selectively incorporated into ZnAl{sub 2}O{sub 4} and YF{sub 3}, respectively. • The luminescence color can be tuned by adjusting the excitation wavelength. - Abstract: Glass ceramic containing spinel ZnAl{sub 2}O{sub 4}:Mn{sup 2+} and orthorhombic YF{sub 3}:Pr{sup 3+} nano-crystals has been successfully prepared by a melt-quenching technique. X-ray diffraction and transmission electron microscopy demonstrated that two nano-phases, i.e. ZnAl{sub 2}O{sub 4} and YF{sub 3}, were homogeneously distributed among the glass matrix. Importantly, the selective incorporation of Pr{sup 3+} ions into the Y{sup 3+} nine-fold coordinated sites of YF{sub 3} and the segregation of Mn{sup 2+} dopants in the Zn{sup 2+} tetrahedral sites of ZnAl{sub 2}O{sub 4} were confirmed based on the excitation/emission spectra and the crystal field calculation. Under blue light excitation, both Pr{sup 3+} and Mn{sup 2+} in the glass ceramic can be simultaneously excited, and emit red and green luminescence, respectively, owing to the suppression of energy transfer between them. The luminescence color of the obtained glass ceramic can be easily tuned by adjusting the excitation wavelength. These results indicate the potential application of the glass ceramic as converting phosphor to generate white-light after coupling with the blue LED chip.

• OSTI ID: 22584250
• Journal Information: Materials Research Bulletin, Vol. 73; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINATES
CERAMICS
CRYSTAL FIELD
CRYSTALS
DOPED MATERIALS
EMISSION SPECTRA
EXCITATION
GLASS
LUMINESCENCE
MANGANESE IONS
MATRIX MATERIALS
ORTHORHOMBIC LATTICES
PRASEODYMIUM IONS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
YTTRIUM FLUORIDES
YTTRIUM IONS
ZINC IONS