Electrically driven plasmon mediated energy transfer between ZnO microwires and Au nanoparticles.
Electrically driven plasmon mediated energy transfer between ZnO microwires and Au nanoparticles.
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DOI：
10.1039/c4nr05369a
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发表时间：
2015-01
期刊：
影响因子：
6.7
通讯作者：
Bin Zhao;M. Jiang;Dong-Xu Zhao;Yang Li;Fei Wang;D. Shen
中科院分区：
文献类型：
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作者：
Bin Zhao;M. Jiang;Dong-Xu Zhao;Yang Li;Fei Wang;D. Shen
通过引入Au纳米粒子（NPs），实现了ZnO四边形微丝（MWs）表面缺陷态与局域表面等离子激元之间的电驱动能量转移。制备了具有绿色发射的ZnO四边形MWs电致发光器件。一旦Au纳米粒子被溅射到ZnO MWs的表面上，ZnO MWs的电致发光将从绿色转变为红色。同时，通过在单个ZnO MW上周期性地溅射Au NPs，观察到双发射。由于Au NPs的存在，电驱动等离子体介导的能量转移可以实现放大或淬灭表面缺陷发射的调制。研究了表面等离子体激元模式介导的能量传递的动力学过程。这种新的能量转移方法为宽禁带半导体材料的表面缺陷态激发的改性和重组提供了一种新的途径。
Electrically driven energy transfer between the surface defect states of ZnO quadrilateral microwires (MWs) and localized surface plasmon polaritons has been realized by means of introducing Au nanoparticles (NPs). An electroluminescence device with green emission using ZnO quadrilateral MWs, was fabricated. Once the Au NPs are sputtered on the surfaces of the ZnO MWs, the electroluminescence of the ZnO MWs will shift from green to red. Meanwhile, dual emissions were observed by means of sputtering Au NPs on a single ZnO MW periodically. Due to the Au NPs, electrically driven plasmon mediated energy transfer can achieve the modulation of amplifying, or quenching the surface defect emission. The relevant dynamic process of the surface plasmon mode mediated energy transfer was investigated. This new energy transfer method potentially offers an approach of modification and recombination of the surface defect state excitations of wide bandgap semiconductor materials.