Energy shift of photoemission spectra for organics-passivated CdSe nanoparticles: The final-state effect

Pin Jiun Wu, Ku Ding Tsuei*, Kung-Hwa Wei, Keng S. Liang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Size-dependent energy shift of photoemission spectra with respect to bulk sample has been examined for colloidally prepared CdSe nanoparticles with a series of particle sizes. The core-level shifts are well described by a theoretical calculation based on a final-state effect model, whereas an additional initial-state effect due to quantum confinement is required to elucidate the valence-band edge shifts. The results indicate that the interaction between the photohole and the dielectric background in the final state has to be considered in photoemission measurements for organics-passivated nanoparticles. The calculated results in the literature appear to overestimate the initial-state effect compared to our experimental observation.

Original languageEnglish
Pages (from-to)6-11
Number of pages6
JournalSolid State Communications
Volume141
Issue number1
DOIs
StatePublished - 1 Jan 2007

Keywords

  • A. Nanostructures
  • B. Chemical synthesis
  • E. Photoelectron spectroscopies
  • E. Synchrotron radiation

Fingerprint Dive into the research topics of 'Energy shift of photoemission spectra for organics-passivated CdSe nanoparticles: The final-state effect'. Together they form a unique fingerprint.

Cite this