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兰州大学 [2]
长春光学精密机械与物... [1]
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会议论文 [3]
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2009 [2]
2006 [1]
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materials ... [1]
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Effect of B(2)O(3) on long-last phosphorescence of SrAl(2)O(4):Eu(2+),Dy(3+)
会议论文
International Materials Research Conference, Chongqing, PEOPLES R CHINA, JUN 09-12, 2008
作者:
Wang, YH
;
Song, XY
;
Zhang, SH
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浏览/下载:5/0
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提交时间:2015/07/31
SrAl(2)O(4):Eu(2+), Dy(3+)
Persistent Luminescence
Boron Substitution
Effect of B2O3 on long-last phosphorescence of SrAl2O4:Eu2+,Dy3+
会议论文
MRS International Materials Research Conference, IMRC 2008, Chongqing, China, June 9, 2008 - June 12, 2008
作者:
Wang, Yuhua
;
Song, Xinyu
;
Zhang, Shuihe
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浏览/下载:5/0
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提交时间:2017/01/20
Luminescence
Aluminum
Boron
Boron compounds
Emission spectroscopy
Europium
Materials science
Positrons
Reconnaissance aircraft
Solid state reactions
Decay curves
Decay time
Defect complexes
Defects induced
Dy
3+
Emission intensities
IR spectrum
Persistent luminescence
Photoluminescence properties
SrAl
2
O
4
:Eu
2+
UV emissions
Energy transfer and red phosphorescence in strontium aluminates doped with Cr3+, Eu2+ and Dy3+ (EI CONFERENCE)
会议论文
Dielectrics in Emerging Technologies -and- Persistent Phosphors - International Symposia, May 15, 2005 - May 20, 2005, Quebec City, QC, Canada
Zhang J.
;
Zhong R.
;
Zhang X.
;
Lu S.
;
Wang X.
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浏览/下载:22/0
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提交时间:2013/03/25
Cr3+ activated red (694 nm) long persistent phosphorescence originating from 2E-4A2 transition is observed in 4SrO·7Al2O3: Cr3+
Eu2+
Dy3+ system. It is demonstrated that the red phosphorescence is resulted from the conversion of Eu2+ activated blue phosphorescence through persistence energy transfer from Eu2+ to Cr3+. The excitation spectra of the 694 nm emission exhibit strong f-d band of Eu 2+
indicating the existence of the energy transfer. The dependence of lifetimes and intensities of the red and blue emissions on Cr3+ concentrations are studied. The intensity ratio of the red to blue emission bands obtained from photoluminescence spectra is in good agreement with that obtained from fluorescence lifetime measurements. The decay curves of the red phosphorescence at 694nm are also studied.
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