论文标题
等离子体引起的谐振对Ag装饰ZnSe纳米线的光学性质的谐振作用
Plasmon induced resonant effects on the optical properties of Ag-decorated ZnSe nanowires
论文作者
论文摘要
在这项工作中，我们介绍了如何通过在Znse纳米线的侧壁上存在Ag纳米颗粒来修饰ZnSE纳米线的光学性质。特别是我们表明，ZnSe纳米线的低温发光改变了其形状，增强了与杂质相关的重组的声子修复，并影响室温下瞬时吸收漂白的上升和衰减时间，并增加了前者的降低。相反，ZnSE纳米线上Au NP的沉积不会改变样品的光学特性。我们建议这些实验观察的基础机制是基于以下事实，即通过Foerster的相互作用转移能量转移，即Ag纳米颗粒的局部表面等离子体共振（LSPR）在光谱中随着ZNSE的吸收和排放而频繁地重叠，而AU LSPR则没有。
In this work we present how the optical properties of ZnSe nanowires are modified by the presence of Ag nanoparticles on the sidewalls of the ZnSe nanowires. In particular we show that the low-temperature luminescence of the ZnSe nanowires changes its shape, enhancing the phonon-replicas of impurity related recombination and affecting rise and decay times of the transient absorption bleaching at room temperatures, with an increase of the former and a decrease of the latter. In contrast, the deposition of Au NPs on the ZnSe nanowires does not change the optical properties of the sample. We suggest that the mechanism underlying these experimental observations is energy transfer via the Foerster interaction based on the fact that the localized surface plasmon resonance (LSPR) of Ag nanoparticles spectrally overlaps with absorption and emission of ZnSe while the Au LSPR does not.
