Structural and luminescence properties of Eu-doped ZnO nanorods fabricated by a microemulsion method
Structural and luminescence properties of Eu-doped ZnO nanorods fabricated by a microemulsion method
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DOI：
10.1063/1.1952576
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发表时间：
2005-06-20
影响因子：
4
通讯作者：
Kanemitsu, Y
中科院分区：
文献类型：
--
作者：
Ishizumi, A;Kanemitsu, Y
研究了微乳液法制备的Eu掺杂ZnO（ZnO：Eu）纳米棒的光致发光（PL）特性。ZnO：Eu纳米棒具有六方晶体结构，由于Eu3+离子的4f内跃迁而呈现出尖锐的发光。激发能量和温度对发光强度的影响表明，与Eu 3+相关的发光效率是由激发态Eu 3+离子的能量弛豫过程决定的，而不是由ZnO纳米棒向Eu 3+离子的能量传递过程决定的。讨论了ZnO：Eu纳米棒中的能量传递和发光过程。(c)2005年美国物理学会。
We have studied photoluminescence (PL) properties of Eu-doped ZnO (ZnO:Eu) nanorods fabricated by a microemulsion method. The ZnO:Eu nanorods have a hexagonal crystal structure and exhibit a sharp luminescence due to the intra-4f transitions of Eu3+ ions. The excitation energy and temperature dependence of the PL intensity show that the Eu3+-related PL efficiency is determined by the energy relaxation process of excited Eu3+ ions, rather than by the energy transfer process from ZnO nanorods to Eu3+ ions. The energy transfer and luminescence processes in ZnO:Eu nanorods are discussed. (c) 2005 American Institute of Physics.