Luminescence of the elpasolite series M{sup I}{sub 2}M{sup II}MCl{sub 6} (M{sup I}=Cs, Rb; M{sup II}=Li, Na; M=Lu, Y, Sc, In) doped with europium using synchrotron radiation excitation

Journal Article · Sun Apr 15 04:00:00 EDT 2012 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2012.01.047· OSTI ID:22012096

Changkui, Duan ^[1]; Guohua, Jia ^[2]; Cheng, Bing-Ming ^[3]

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1. Department of Physics, University of Science and Technology of China, Hefei, Anhui (China)
2. College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018 (China)
3. National Synchrotron Radiation Research Center, Hsinchu, Taiwan (China)

The excitation and emission spectra of a series of cubic hexachloroelpasolites doped with europium have been investigated using synchrotron radiation at 10 K. Besides the Eu{sup 3+} emission from {sup 5}D{sub J} (J=0-3) multiplets, emission from {sup 5}H{sub 3} is also observed for Cs{sub 2}NaIn{sub 0.995}Eu{sub 0.005}Cl{sub 6}, since the gap to the next lowest level is spanned by seven phonons. The excitation spectra of samples indicate impurities due to oxygen and divalent europium. Broad band emission from Eu{sup 2+} is reported from the crystalline samples grown in vacuum by the Bridgman process, with the maximum wavelength shifting to the red with increasing lattice parameter for the series Cs{sub 2}NaMCl{sub 6}:Eu{sup 2+} (M=Lu, Y, Eu). - Graphical abstract: Luminescence of Eu{sup 3+} and Eu{sup 2+} in elpasolite hosts under synchrotron radiation is observed and assigned. Highlights: Black-Right-Pointing-Pointer Synthesis of M{sup I}{sub 2}M{sup II}MCl{sub 6}-doped with europium. Black-Right-Pointing-Pointer 10 K spectra indicate broad bands due to Eu-O CT, Eu-Cl CT and Eu{sup 2+} transitions. Black-Right-Pointing-Pointer Ultraviolet emission from the {sup 3}H{sub 5} level of Eu{sup 3+}, not only restricted to fluorides. Black-Right-Pointing-Pointer Correlation between Eu{sup 2+} emission maximum and host lattice parameter.

• OSTI ID: 22012096
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Vol. . 188; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
DOPED MATERIALS
EMISSION SPECTRA
EUROPIUM
EUROPIUM IONS
EXCITATION
FLUORIDES
IMPURITIES
LATTICE PARAMETERS
LUMINESCENCE
OXYGEN
SYNCHROTRON RADIATION
SYNTHESIS
ULTRAVIOLET RADIATION