標題: Energy shift of photoemission spectra for organics-passivated CdSe nanoparticles: The final-state effect
作者: Wu, Pin-Jiun
Tsuei, Ku-Ding
Wei, Kung-Hwa
Liang, Keng S.
材料科學與工程學系
電子物理學系
Department of Materials Science and Engineering
Department of Electrophysics
關鍵字: nanostructures;chemical synthesis;photoelectron spectroscopies;synchrotron radiation
公開日期: 1-一月-2007
摘要: 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. (c) 2006 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ssc.2006.09.048
http://hdl.handle.net/11536/11344
ISSN: 0038-1098
DOI: 10.1016/j.ssc.2006.09.048
期刊: SOLID STATE COMMUNICATIONS
Volume: 141
Issue: 1
起始頁: 6
結束頁: 11
顯示於類別:期刊論文


文件中的檔案:

  1. 000242889000002.pdf