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Switching-on quantum size effects in silicon nanocrystals

Journal Article


Abstract


  • The size-dependence of the absolute luminescence quantum yield of size-separated silicon nanocrystals reveals a “volcano” behavior, which switches on around 5 nm, peaks at near 3.7–3.9 nm, and decreases thereafter. These three regions respectively define: i) the transition from bulk to strongly quantum confined emissive silicon, ii) increasing confinement enhancing radiative recombination, and iii) increasing contributions favoring non-radiative recombination.

Authors


  •   Qian, Chenxi (external author)
  •   Mastronardi, Melanie L. (external author)
  •   Ozin, Geoffrey A. (external author)
  •   Sun, Wei (external author)
  •   Wang, Liwei (external author)
  •   Wei, Muan (external author)
  •   Breu, Josef (external author)
  •   Casillas, Gilberto

Publication Date


  • 2015

Citation


  • Sun, W., Qian, C., Wang, L., Wei, M., Mastronardi, M. L., Casillas, G., Breu, J. & Ozin, G. A. (2015). Switching-on quantum size effects in silicon nanocrystals. Advanced Materials, 27 (4), 746-749.

Scopus Eid


  • 2-s2.0-84921492285

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1478

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 746

End Page


  • 749

Volume


  • 27

Issue


  • 4

Abstract


  • The size-dependence of the absolute luminescence quantum yield of size-separated silicon nanocrystals reveals a “volcano” behavior, which switches on around 5 nm, peaks at near 3.7–3.9 nm, and decreases thereafter. These three regions respectively define: i) the transition from bulk to strongly quantum confined emissive silicon, ii) increasing confinement enhancing radiative recombination, and iii) increasing contributions favoring non-radiative recombination.

Authors


  •   Qian, Chenxi (external author)
  •   Mastronardi, Melanie L. (external author)
  •   Ozin, Geoffrey A. (external author)
  •   Sun, Wei (external author)
  •   Wang, Liwei (external author)
  •   Wei, Muan (external author)
  •   Breu, Josef (external author)
  •   Casillas, Gilberto

Publication Date


  • 2015

Citation


  • Sun, W., Qian, C., Wang, L., Wei, M., Mastronardi, M. L., Casillas, G., Breu, J. & Ozin, G. A. (2015). Switching-on quantum size effects in silicon nanocrystals. Advanced Materials, 27 (4), 746-749.

Scopus Eid


  • 2-s2.0-84921492285

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1478

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 746

End Page


  • 749

Volume


  • 27

Issue


  • 4