Basic aspects of gold nanoparticle photo-functionalization using oxides and 2D materials: Control of light confinement, heat-generation, and charge separation in nanospace

Although the optical properties of localized surface plasmon resonance and the relaxation processes of excited hot electrons in gold nanoparticles (AuNPs) have been well understood, the phenomena that occur when AuNPs relax on solid surfaces of semiconductors or insulators remain largely unknown. Th...

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Bibliographic Details
Published in:The Journal of chemical physics 2022-10, Vol.157 (14), p.140901-140901
Main Authors: Furube, Akihiro, Yanagiya, Shin-ichiro, Koinkar, Pankaj M., Katayama, Tetsuro
Format: Article
Language:English
Subjects:
Basic oxides
Charge transfer
Electron transfer
Gold
Hot electrons
Insulators
Light sources
Mass transport
Nanoparticles
Optical measuring instruments
Optical properties
Photovoltaic cells
Physics
Solar cells
Solid surfaces
Thermal energy
Transistors
Two dimensional materials
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Summary:Although the optical properties of localized surface plasmon resonance and the relaxation processes of excited hot electrons in gold nanoparticles (AuNPs) have been well understood, the phenomena that occur when AuNPs relax on solid surfaces of semiconductors or insulators remain largely unknown. Thermal energy diffusion and electron transfer are relatively simple physical processes, but the phenomena they induce are interesting because of a variety of new application developments. In this Perspective, we introduce the fundamental aspects as well as advanced applications of several new physical phenomena induced by AuNPs-based hybrid materials with oxides or 2D materials. Localized heat can induce a great force on the surrounding medium to control mass transport, and plasmon-induced charge transfer reactions are expected to have applications in photocatalysis and solar cells. We also review increasing reports on the development of nano-optical sensors, transistors, and nano-light sources based on precisely controlled device structures utilizing AuNPs.
ISSN:0021-9606
1089-7690
DOI:10.1063/5.0101300