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Excitation-Dependence of Plasmon-Induced Hot Electrons in Gold Nanoparticles
Excitation-Dependence of Plasmon-Induced Hot Electrons in Gold Nanoparticles
- Source :
- The Journal of Physical Chemistry Letters. 8:4925-4929
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- The decay of a plasmon leads to a hot electron distribution in metallic nanoparticles. Depending on the processes involved in the excitation, different distributions are obtained, which thermalize differently. We experimentally investigate excitation-wavelength and size-dependences on the generation and thermalization of the hot-electrons. We can confirm the absence of size-dependences, and we clearly observe two regimes with significantly different relaxation dynamics depending on the photon energy. The hot electron generation is more efficient when exciting with light that enables interband transitions.
- Subjects :
- Materials science
Relaxation (NMR)
02 engineering and technology
Photon energy
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Thermalisation
Colloidal gold
General Materials Science
Physical and Theoretical Chemistry
Atomic physics
0210 nano-technology
Metal nanoparticles
Hot electron
Plasmon
Excitation
Subjects
Details
- ISSN :
- 19487185
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry Letters
- Accession number :
- edsair.doi.dedup.....7dd82d581d1dd074ce387d4aba246b21
- Full Text :
- https://doi.org/10.1021/acs.jpclett.7b02043