Hot electron photoemission from plasmonic nanoparticles: Role of transient absorption in surface mechanism

Author

Uskov, A.V. ; Protsenko, I.E. ; Ikhsanov, R.Sh. ; Babicheva, Viktoriia E. ; Zhukovsky, Sergei V. ; Lavrinenko, Andrei V. ; O´Reilly, E.P. ; Hongxing Xu

Author_Institution

P.N. Lebedev Phys. Inst., Moscow, Russia

fYear

2014

fDate

25-28 Aug. 2014

Firstpage

31

Lastpage

33

Abstract

We analyze and compare surface- and volume-based internal photoelectric effects from spherical nanoparticles, obtaining analytical expressions for the photoemission rate in both cases. Similar to results for a flat metal surface, one can show that the surface mechanism prevails, since it is unaffected by detrimental hot electron collisions. Transient absorption results from dielectric permittivity discontinuity at the nanoparticle boundary and leads to a substantial (by ~5 times) increase of the photoelectron emission rate.

Keywords

hot carriers; nanoparticles; permittivity; photoemission; plasmonics; analytical expressions; detrimental hot electron collisions; dielectric permittivity discontinuity; flat metal surface; hot electron photoemission; nanoparticle boundary; photoelectron emission rate; plasmonic nanoparticles; spherical nanoparticles; surface mechanism; surface-based internal photoelectric effect; transient absorption; volume-based internal photoelectric effect; Absorption; Cooling; Metals; Nanoparticles; Photoelectricity; Photonics; Plasmons;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2014 8th International Congress on

Conference_Location

Lyngby

Print_ISBN

978-1-4799-3450-8

Type

conf

DOI

10.1109/MetaMaterials.2014.6948547

Filename

6948547