PHOTONIC BAND GAP EFFECT ON ENERGY TRANSFER IN Tb3+, Eu3+ CO-DOPED TiO2 INVERSE OPAL FILMS

被引：4
作者：
Liu, Zhendong [1 ]
Zhou, Ji [1 ]
Li, Bo [2 ]
机构：
[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Adv Mat Inst, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2013年 / 27卷 / 14期
基金：
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词：
Photonic band gap; energy transfer; sol-gel; SPONTANEOUS EMISSION; CRYSTAL; FLUORESCENCE;
D O I：
10.1142/S0217984913500991
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The energy transfer from Tb3+ to Eu3+ co-doped TiO2 (TiO2:Tb, Eu) inverse opal photonic crystals was investigated by photoluminescence. The results showed that the photonic band gap enhanced energy transfer from the donor Tb3+ to the acceptor Eu3+. When the fluorescence emission wavelength of Tb3+ overlaps with the photonic band gap, the fluorescence intensity of Tb3+ is suppressed, while the fluorescence intensity of Eu3+ is enhanced. Energy transfer efficiencies were attributed to the tuning effects of energy transfer in the photoluminescence process by photonic crystal structure.
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页数：7
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