利用电子能量损失光谱学研究弓形纳米腔-量子点系统中的反射子

IF 3.3 3区化学 Q2 CHEMISTRY, PHYSICAL

The Journal of Physical Chemistry C Pub Date : 2024-12-16 DOI:10.1021/acs.jpcc.4c02606

Rongyue Yao, Shihang Zhao, Yuan Zhang, Changlin Zheng, Luxia Wang

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引用次数: 0

摘要

作为由强耦合质子和激子形成的混合激子，传统的研究方法是通过远场散射、吸收或光致发光光谱来研究丛生子。在最近能量分辨率提高的刺激下，近场电子能量损失光谱（EELS）逐渐被探索出来，以前所未有的空间和能量分辨率揭示更多有关丛生子现象的见解。在本研究中，我们通过数值模拟研究了银弓形纳米腔-半导体量子点（QDs）系统中的丛生子，并将其与远场技术进行了理论比较，以说明 EELS 的优势，即亚纳米分辨率和暗质子。所获得的见解可能会指导对强耦合的进一步理论和实验研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Plexcitons in Bowtie Nanocavities–Quantum Dots Systems Studied by Electron Energy Loss Spectroscopy

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Plexcitons in Bowtie Nanocavities–Quantum Dots Systems Studied by Electron Energy Loss Spectroscopy

As hybrid excitations formed by strongly coupled plasmons and excitons, plexcitons are conventionally investigated by far-field scattering, absorption, or photoluminescence spectroscopy. Stimulated by the recently improved energy resolution, near-field electron energy loss spectroscopy (EELS) is gradually explored to reveal more insights into the plexciton phenomena with unprecedented spatial and energy resolution. In the current study, we study the plexcitons in silver bowtie nanocavities–semiconductor quantum dots (QDs) systems with EELS by numerical simulation and compare them theoretically with the far-field technique to illustrate the advantages of EELS, i.e., subnanometer resolution and dark plasmons. The insights gained might guide further theoretical and experimental studies of the strong coupling.

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来源期刊

The Journal of Physical Chemistry C 化学-材料科学：综合

CiteScore

6.50

自引率

8.10%

发文量

2047

审稿时长

1.8 months

期刊介绍： The Journal of Physical Chemistry A/B/C is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.