钙钛矿纳米结构中的可调谐Fano共振
首发时间:2021-02-05
摘要:卤化钙钛矿因其具有各向同性和强光子约束等优异的光学和电学特性,近年来吸引了许多科研工作者的目光。本文利用时域有限差分法,通过 FDTD Solutions 软件发现了卤化钙钛矿纳米球中的Fano共振,这是因为激子与纳米球中激发的Mie共振的耦合。此外还在较大的钙钛矿纳米片结构中发现了Fano共振。更重要的,在钙钛矿/金的杂化周期结构的可见光频带中发现了可调谐的Fano共振。这些发现为控制钙钛矿纳米结构的光学性质提供了一种新方法,仿真的结果为有效控制集成在芯片上的发光纳米天线的发射特性提供了新途径。
关键词: 非线性光学; 表面等离激元; 卤化钙钛矿 Fano共振 时域有限差分法
For information in English, please click here
Tunable Fano resonance in perovskite nanostructures
Abstract:Halide perovskites with isotropy and strong photon confinement that make them attractive due to their optical and electrical properties, which has practical implications for designing low-power nanoscale sources. This paper uses the FDTD Solutions software to find the Fano resonance in the halide perovskite nanospheres by using the finite difference time domain method. This is due to the coupling of the excitons and the Mie resonance excited in the nanospheres. Further, Fano resonances were found in larger perovskite nanoplatelet structures. More importantly, a tunable Fano resonance was found in the visible light frequency band in a perovskite/Au hybrid periodic structure. There findings provide a new method to control the optical properties of perovskite nanostructures, and the simulation results provide new way to an effective control of emission characteristics of light-emitting nano-antenna integrated on a chip.
Keywords: nonlinear optics Surface plasmons Halide perovskite Fano resonance Finite difference time domain method
引用
No.****
同行评议
勘误表
钙钛矿纳米结构中的可调谐Fano共振
评论
全部评论