Plasmon-enhanced erbium luminescence
Plasmon-enhanced erbium luminescence
复制标题
DOI：
10.1063/1.2392827
复制
发表时间：
2006-11-20
影响因子：
4
通讯作者：
Polman, A.
中科院分区：
文献类型：
--
作者：
Mertens, H.;Polman, A.
结果表明，如果纳米颗粒支持与铒发射共振的等离激元模式，则位于各向异性银纳米颗粒附近的光学活性铒离子的光致发光强度会显着增强。此外，发现光致发光强度增强是与这些等离激元模式的偏振相对应的偏振。两项观察结果均表明，光致发光增强是由于 Er3+ I-4(13/2)-I-4(15/2) 跃迁偶极子与 Ag 纳米粒子中的等离激元模式的耦合所致。由于已知这种耦合机制会影响发射速率，因此金属纳米粒子提供了减少已知在各种铒掺杂材料中发生的温度或浓度猝灭过程的影响的机会。 (c) 2006 年美国物理研究所。
It is demonstrated that the photoluminescence intensity of optically active erbium ions positioned in close proximity of anisotropic Ag nanoparticles is significantly enhanced if the nanoparticles support plasmon modes that are resonant with the erbium emission. In addition, the photoluminescence intensity enhancement is found to be polarized corresponding to polarization of these plasmon modes. Both observations demonstrate that the photoluminescence enhancement is due to coupling of the Er3+ I-4(13/2)-I-4(15/2) transition dipoles with plasmon modes in the Ag nanoparticles. As this coupling mechanism is known to affect the emission rate, metal nanoparticles provide an opportunity to reduce the effect of temperature or concentration quench processes that are known to occur in a wide range of erbium-doped materials. (c) 2006 American Institute of Physics.