Volume 8 Issue 4
Sep.  2015
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XU Jia-lin, JIN Wei-zhao, LIU Wang, PENG Hai-yi, LIU He, LI Chun, LIN Hai, LIU Jing-he, ZENG Fan-ming. Preparation and luminescent properties of Ho,Yb: Tb3Ga5O12 nano-powder[J]. Chinese Optics, 2015, 8(4): 608-614. doi: 10.3788/CO.20150804.0608
Citation: XU Jia-lin, JIN Wei-zhao, LIU Wang, PENG Hai-yi, LIU He, LI Chun, LIN Hai, LIU Jing-he, ZENG Fan-ming. Preparation and luminescent properties of Ho,Yb: Tb3Ga5O12 nano-powder[J]. Chinese Optics, 2015, 8(4): 608-614. doi: 10.3788/CO.20150804.0608

Preparation and luminescent properties of Ho,Yb: Tb3Ga5O12 nano-powder

doi: 10.3788/CO.20150804.0608
  • Received Date: 08 Apr 2015
  • Accepted Date: 15 May 2015
  • Publish Date: 25 Jan 2015
  • With ammonium bicarbonate as the precipitating agent, using Tb4O7, Ga2O3, Ho2O3, Yb2O3 as raw materials(the stoichiometry of Tb4O7 and Ga2O3) is 3: 5 and doping Yb3+(8at.%)/Ho3+(0.5at.%、1at.%、1.5at.%、2.0at.% respectively), Ho,Yb: Tb3Ga5O12(Ho,Yb: TGG) nano-powder was sintered at 1 200 ℃ for 10 h to obtain a pure phase. The samples were characterized by XRD, TG-DTA, Infrared Spectroscopy(IRS), Scanning Electron Microscopy(SEM) and upconversion emission spectroscopy. The experimental results show that the average grain size of the samples is 38.10 nm under the temperature of 1 200 ℃. When the samples with Yb3+(8at.%)/Ho3+(1.5at.%) concentrations were used, there was a clear upconversion luminescence in the wavelength rage of blue, green and red by 980 nm LD. The formation mechanism was discussed at the same time. Analyse indicates that Ho3+ transits from excited states 5S2 and 5F4 to ground state 5I8, achieving the launch of green, and it transits from excited states 5F5 and 5F3 to ground state 5I8, achieving the launch of red and blue respectively.

     

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