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      • HARVEST
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      Silicon 1s Near Edge X-ray Absorption Fine Structure Spectroscopy of Functionalized Silicon Nanocrystals

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      Date
      2016
      Author
      Ritchie, Andrew
      Cao, Wei
      Dasog, Mita
      Purkait, T.K.
      Senger, Curtis
      HU, Yongfeng
      Xiao, Q.F.
      Veinot, Jon
      Urquhart, Stephen
      Urquhart, Stephen
      Publisher
      American Chemical Society
      Type
      Article
      Peer Reviewed Status
      Peer Reviewed
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      Abstract
      Silicon 1s Near Edge X-ray Absorption Fine Structure (NEXAFS) spectra of silicon nanocrystals have been examined as a function of nanocrystal size (3 – 100 nm), varying surface functionalization (hydrogen or 1-pentyl termination), or embedded in oxide. The NEXAFS spectra are characterized as a function of nanocrystal size and surface functionalization. Clear spectroscopic evidence for long range order is observed Si-NCs that are 5-8 nm in diameter or larger. Energy shifts in the silicon 1s NEXAFS spectra of covalently functionalized silicon nanocrystals with changing size are attributed to surface chemical shifts and not to quantum confinement effects.
      Citation
      A. Ritchie, W. Cao, M. Dasog, T.K. Purkait, C. Senger, Y.F. Hu, Q.F. Xiao, J.G.C. Veinot and S.G. Urquhart, 2016. Silicon 1s near edge X-ray absorption fine structure spectroscopy of functionalized silicon nanocrystals.The Journal of Chemical Physics, 145, 154703.
      URI
      http://hdl.handle.net/10388/12504
      DOI
      10.1063/1.4964371
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      • Chemistry
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