Size-dependent angular distributions of low-energy photoelectrons emitted from NaCI nanoparticles

Kevin R. Wilson, Zou Shengli, Shu Jinian, Eckart Rühl, Stephen R. Leone, George C Schatz, Musahid Ahmed

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Angle-resolved threshold photoelectron spectra are recorded for size-selected beams of sodium chloride nanoparticles (radius = 25-250 nm). The photoelectron angular distributions exhibit a size-dependent asymmetry that is inversely proportional to particle radius. A model of the internal electric field amplitude and the photoelectron escape probability inside the particles reveals that the asymmetry in photoemission arises because the finite dimensions of the particle are comparable to both the photon penetration depth (14-22 nm) and electron escape length (10 nm).

Original languageEnglish
Pages (from-to)2014-2019
Number of pages6
JournalNano Letters
Volume7
Issue number7
DOIs
Publication statusPublished - Jul 2007

Fingerprint

Angular distribution
Photoelectrons
photoelectrons
angular distribution
Nanoparticles
nanoparticles
escape
asymmetry
radii
Photoemission
sodium chlorides
Sodium chloride
Sodium Chloride
energy
photoelectric emission
penetration
Photons
Electric fields
thresholds
electric fields

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Chemistry (miscellaneous)

Cite this

Wilson, K. R., Shengli, Z., Jinian, S., Rühl, E., Leone, S. R., Schatz, G. C., & Ahmed, M. (2007). Size-dependent angular distributions of low-energy photoelectrons emitted from NaCI nanoparticles. Nano Letters, 7(7), 2014-2019. https://doi.org/10.1021/nl070834g

Size-dependent angular distributions of low-energy photoelectrons emitted from NaCI nanoparticles. / Wilson, Kevin R.; Shengli, Zou; Jinian, Shu; Rühl, Eckart; Leone, Stephen R.; Schatz, George C; Ahmed, Musahid.

In: Nano Letters, Vol. 7, No. 7, 07.2007, p. 2014-2019.

Research output: Contribution to journalArticle

Wilson, KR, Shengli, Z, Jinian, S, Rühl, E, Leone, SR, Schatz, GC & Ahmed, M 2007, 'Size-dependent angular distributions of low-energy photoelectrons emitted from NaCI nanoparticles', Nano Letters, vol. 7, no. 7, pp. 2014-2019. https://doi.org/10.1021/nl070834g
Wilson, Kevin R. ; Shengli, Zou ; Jinian, Shu ; Rühl, Eckart ; Leone, Stephen R. ; Schatz, George C ; Ahmed, Musahid. / Size-dependent angular distributions of low-energy photoelectrons emitted from NaCI nanoparticles. In: Nano Letters. 2007 ; Vol. 7, No. 7. pp. 2014-2019.
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