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Energy transfer in Y3Al5O12:Ce 3, Pr3+ and CaMoO4:Sm3, Eu 3 phosphors (EI CONFERENCE) 会议论文  OAI收割
作者:  
Wang L.;  Wang X.-J.;  Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:36/0  |  提交时间:2013/03/25
Non-radiative energy transfers (ET) from Ce3 to Pr3+ in Y3Al5O12:Ce3  Pr3+ and from Sm3 to Eu3 in CaMoO4:Sm3  Eu3 are studied based on photoluminescence spectroscopy and fluorescence decay patterns. The result indicates an electric dipoledipole interaction that governs ET in the LED phosphors. For Ce3 concentration of 0.01 in YAG:Ce3  Pr3+  the rate constant and critical distance are evaluated to be 4.510-36 cm 6 s-1 and 0.81 nm  respectively. An increase in the red emission line of Pr3+ relative to the yellow emission band of Ce 3  on increasing Ce3 concentration is observed. This behavior is attributed to the increase of spectral overlap integrals between Ce3 emission and Pr3+ excitation due to the fact that the yellow band shifts to the red spectral side with increasing Ce3 concentration. In CaMoO4:Sm3  Eu3  Sm 3Eu3 transfer occurs from 4G5/2 of Sm3 to 5D0 of Eu3. The rate constant of 8.510-40 cm6 s-1 and the critical transfer distance of 0.89 nm are evaluated. 2010 Elsevier B.V. All rights reserved.  
Gd_2O_3∶RE~(3+)(RE:Eu,Tb)纳米棒的合成与表征 期刊论文  OAI收割
功能材料, 2010, 卷号: 41, 期号: 5, 页码: 907-910
张吉林; 孙德慧; 洪广言
收藏  |  浏览/下载:30/0  |  提交时间:2012/06/07
Relationship between charge transfer energies of Yb3+ and Sm3+ and crystal environmental factor 期刊论文  OAI收割
journal of luminescence, 2009, 卷号: 129, 期号: 3, 页码: 187-191
Li L; Zhou SH; Zhang SY
收藏  |  浏览/下载:34/0  |  提交时间:2010/05/04
Crystal structure and charge transfer energy of the vaterite-type orthoborate YBO3:Eu 期刊论文  OAI收割
solid state sciences, 2008, 卷号: 10, 期号: 9, 页码: 1173-1178
Li L; Zhou SH; Zhang SY
收藏  |  浏览/下载:191/72  |  提交时间:2010/04/14
Preparation and luminescent properties of cubic Eu3+ : Y2O3 nanocrystals and comparison to bulk Eu3+ : Y2O3 期刊论文  OAI收割
journal of luminescence, 2007, 卷号: 124, 期号: 2, 页码: 213-216
Fu ZL; Zhou SH; Pan TQ; Zhang SY
收藏  |  浏览/下载:182/1  |  提交时间:2010/07/13