Numerical Modeling of Transient Absorption in Hybrid Dual-Plasmonic Au/CuS Nanocrystals

被引：0
|
作者：
Habibpourmoghadam, Atefeh [1 ,2 ,3 ]
Xie, Wenyong [1 ,2 ,3 ]
Bessel, Patrick [4 ,5 ]
Niebur, Andre [1 ,4 ]
Antanovich, Artsiom [4 ]
Dorfs, Dirk [1 ,6 ,7 ]
Lauth, Jannika [1 ,4 ,5 ,8 ]
Lesina, Antonio Cala [1 ,2 ,3 ]
机构：
[1] Cluster Excellence PhoenixD, Photon Opt & Engn Innovat Disciplines, D-30167 Hannover, Germany
[2] Leibniz Univ Hannover, Hannover Ctr Opt Technol, Hannover D-30167, Germany
[3] Leibniz Univ Hannover, Inst Transport & Automat Technol, D-30823 Hannover, Germany
[4] Leibniz Univ Hannover, Inst Phys Chem & Electrochem, D-30167 Hannover, Germany
[5] Leibniz Univ Hannover, Lab Nano & Quantum Engn, Hannover 30167, Germany
[6] Univ Hamburg, Inst Phys Chem, D-20146 Hamburg, Germany
[7] Univ Hamburg, Cluster Excellence CUI Adv Imaging Matter, D-20146 Hamburg, Germany
[8] Univ Tubingen, Inst Phys & Theoret Chem, D-72076 Tubingen, Germany
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2024年 / 128卷 / 49期
关键词：
COPPER SULFIDE NANOCRYSTALS; NANOPARTICLES; RESONANCE; DYNAMICS; AGENT;
D O I：
10.1021/acs.jpcc.4c06776
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Colloidal hybrid Au/CuS nanocrystals have emerged as highly interesting dual-plasmonic materials. Femtosecond transient absorption spectroscopy (TAS) revealed that the resonant excitation of the localized surface plasmon resonance of either Au or CuS results in a transient response in the counterpart, which we attributed to Landau damping stemming from hot carriers at the domain interface. Here, we employ numerical modeling to further clarify the origin of the response in Au/CuS nanocrystals. Numerical simulations identify the UFO-shaped geometry of the Au/CuS nanocrystals, the anisotropy of CuS, and the plasmonic response modified by Landau damping during the TAS as the main governing mechanisms for the dual-plasmonic optical response. Our numerical approach provides an important tool for the modeling of TAS data and provides valuable insights for the design of innovative colloidal dual-plasmonic nanocrystals with optical anisotropy for applications in photocatalysis, thermoplasmonics, and ultrafast photonics.
引用
收藏
页码：21237 / 21244
页数：8
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