物理学报. 2008, 57(1): 581-585.
doi: 10.7498/aps.57.581.
Eu2+,Mn2+在BaZnP2O7中的发光及Eu2+→Mn2+能量传递
- 收稿日期: 2007-03-16
- 修回日期: 2007-04-05
- 刊出日期: 2008-01-15
English Abstract
Luminescence and energy transfer of Eu2+, Mn2+ in BaZnP2O7
- Received Date:
16 March 2007
- Accepted Date:
05 April 2007
- Published Online:
15 January 2008
Abstract: The BaZnP2O7:Eu2+, Mn2+ phosphor was synthesized by high temperature solid state reaction. The luminescence properties and the energy transfer between Eu2+ and Mn2+ were investigated. The emission bands of Eu2+ and Mn2+ peaking at 380nm and 670nm were originated from 5d—4f transition of Eu2+ which partly substituted the Ba2+ sites and 4T1(4G)—6A1(6S) transition of Mn2+ occupying Zn2+ sites, respectively. The dependence of Eu2+ and Mn2+ luminescence properties on their concentration was investigated. With the increasing Mn2+ dopant content, the intensity of Eu2+ was observed to decrease, but the intensity of Mn2+ was simultaneously found to increase. It is suggested from this phenomenon that Mn2+ ion is sensitized by Eu2+ ion, in other words, there is an energy transfer from Eu2+ to Mn2+ in BaZnP2O7 host. According to the Dexter's energy transfer formula of multipolar interaction, we have demonstrated that the energy transfer between Eu2+ and Mn2+ is due to the electric dipole-quadripole interaction of the resonance transfer.
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Keywords:
- phosphate /
- Eu2+ /
- Mn2+ /
- energy transfer
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