La1.6(MoO4)3:Eu0.43+纳米晶合成及发光特性

刘春旭

doi:10.3788/CO.20140706.0931

Volume 7 Issue 6

Nov. 2014

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Chinese Optics > 2014 > 7(6): 931-935.

LIU Chun-xu. Synthesis and luminescence properties of La1.6(MoO4)3:Eu0.43+ nanocrystal[J]. Chinese Optics, 2014, 7(6): 931-935. doi: 10.3788/CO.20140706.0931

Citation:

LIU Chun-xu. Synthesis and luminescence properties of La_1.6(MoO₄)₃:Eu_0.4³⁺ nanocrystal[J]. Chinese Optics, 2014, 7(6): 931-935. doi: 10.3788/CO.20140706.0931

LIU Chun-xu. Synthesis and luminescence properties of La1.6(MoO4)3:Eu0.43+ nanocrystal[J]. Chinese Optics, 2014, 7(6): 931-935. doi: 10.3788/CO.20140706.0931

Citation:

LIU Chun-xu. Synthesis and luminescence properties of La_1.6(MoO₄)₃:Eu_0.4³⁺ nanocrystal[J]. Chinese Optics, 2014, 7(6): 931-935. doi: 10.3788/CO.20140706.0931

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Synthesis and luminescence properties of La_1.6(MoO₄)₃:Eu_0.4³⁺ nanocrystal

doi: 10.3788/CO.20140706.0931

LIU Chun-xu^,

State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

Received Date: 11 Sep 2014
Rev Recd Date: 13 Nov 2014
Publish Date: 25 Nov 2014

Abstract

Abstract

La1.6(MoO4)3:Eu0.43+ nancrystal is synthesized by combustion method and the interaction between the phonon-dopant-lattice and luminescence properties of this nanocrystal are investigated. It is shown by X-ray diffraction that the powders are crystallized in a single phase annealed at 500~900 ℃. It is found that the excitation of the Mo6+-O2- charge transfer band(CTB) can result in the emissions of Eu3+ ion, which indicates that energy transfer takes place from CTB to Eu3+ ions. Two one-phonon sidebands locate at 1=469 nm and 2=426 nm in the excitation spectra which are due to Mo=O and MoOMo expand and contract vibration modes, respectively, with phonon energies of 1 202 cm-1 and 767 cm-1. The Huang-Kun factors S1=0.055 and S2=0.037 describing the interaction intensity between phonon and lattice are determined. The optical properties of La1.6(MoO4)3:Eu0.43+ would be able to provide the experimental foundation to reveal the properties of high conductivity and negative thermal expansion(NTE) with the trivalent ions.
- luminescence property,
- combustion method,
- La1.6(MoO4)3:Eu0.43+ nanocrystal,
- local mode,
- one-phonon sideband

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References(1)

References

[1] IMANAKA N,TAMURA S,ADACHI G,et al.. Electronic state of trivalent ionic conductors with Sc₂(WO₄)₃-type structure[J]. Solid State Ionics,2000,130(3-4):179-182.
[2] NEERAJ S,KIJIMA N,CHEETHAM A K. Novel red phosphors for solid-state lighting:the system NaM(WO₄)_2-x(MoO₄)_x:Eu³⁺(M=Gd,Y,Bi)[J]. Chem. Phys. Lett.,2004,387(1):2-6.
[3] SHA R,GAO W,LIU Y P. Luminescence properties of Na_0.35Ba Mo₈O₁₆:Eu³⁺ phosphor for white LED[J]. J. Chinese Lumin.,2013,34(11):1469-1473.
[4] GENG X Z,TIAN Y W,CHEN Y J,et al.. Hydrothermal syntheses and spectral properties of MMoO₄:Eu³⁺(M=Ca,Sr,Ba) red phosphors[J]. J. Chinese Lumin.,2011,32(7):670-674.
[5] LIU X R. Phosphors for white LED solid state lighting[J]. J. Chinese Lumin.,2007,28(3):291-301.
[6] IMANAKA N,KOBAYASHI Y,TAMURA S,et al.. Trivalent Al³⁺ ion conduction in Al₂(WO₄)₃ solids[J]. Electrochem. Solid-State Lett.,1998,1(6):2713.
[7] IMANAKA N,TAMURA S,KOBAYASHI Y,et al.. Trivalent rare earth ion conduction in the scandium tungstate type structure[J]. J. Alloys Compds.,2000,303/304:303-306.
[8] OKAZAKI Y,UEDA T,TAMURA S,et al.. Trivalent Sc³⁺ ion conduction in the Sc₂(WO₄)₃ Sc₂(MoO₄)₃ solid solution[J]. Solid State Ionics,2000,136/137:437440.
[9] LIU H,SECCO R A,IMANAKA N,et al.. Ionic to electronic dominant conductivity in Al₂(WO₄)₃ at high pressure and high temperature[J]. J. Phys. Chem. Solids,2003,64(2):287-294.
[10] XUE J S,ANTONIO M R,SODERHOLM L. Polymorphs of Ln₂MoO₆:a neutron diffraction investigation of the crystal structures of La₂MoO₆ and Tb₂MoO₆[J]. Chem. Mater.,1995,7(2):333-340.
[11] BLASSE G. On the Eu³⁺ fluorescence in mixed metal oxides.V.the Eu³⁺ fluorescence in the rocksalt lattice[J]. J. Chem. Phys.,1966,45(6):3327-3331.
[12] LIU CH X,LIU J Y. Judd-Ofelt intensity parameters and spectral properties of Gd₂O₃:Eu³⁺ nanocrystals[J]. J. Phys. Chem. B,2006,110(41):20277-20281.
[13] PANG M,LIU X,LIN J. Luminescence properties of R₂MoO₆:Eu³⁺(R=Gd,Y,La) phosphors prepared by Pechini sol-gel process[J]. J. Mater. Res.,2005,20(10):2676-2681.
[14] HUANG J,LORIERS J,PORCHER P. Spectroscopic properties of Ln₂MoO₆:Eu³⁺[J]. J. Solid State Chem.,1982,43(1):87-96.