Volume 7 Issue 6
Nov.  2014
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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 La1.6(MoO4)3:Eu0.43+ nanocrystal[J]. Chinese Optics, 2014, 7(6): 931-935. doi: 10.3788/CO.20140706.0931

Synthesis and luminescence properties of La1.6(MoO4)3:Eu0.43+ nanocrystal

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

     

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  • [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 Na0.35Ba 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.

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