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Volumn 105, Issue 5, 1998, Pages 317-322

Quantum confinement in nanoscale silicon: The correlation of size with bandgap and luminescence

Author keywords

A. nanostructures; E. light absorption and reflection; E. luminescence

Indexed keywords

BAND STRUCTURE; BINDING ENERGY; ELECTRON ENERGY LEVELS; ENERGY GAP; LIGHT ABSORPTION; LUMINESCENCE OF SOLIDS; NANOSTRUCTURED MATERIALS; OPTICAL PROPERTIES; OPTICAL VARIABLES MEASUREMENT; POROSITY; QUANTUM THEORY; REFLECTION;

EID: 0031995463     PISSN: 00381098     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0038-1098(97)10099-0     Document Type: Article
Times cited : (145)

References (30)
  • 8
    • 85033886456 scopus 로고    scopus 로고
    • note
    • As a result phonons are required for radiative recombination and the oscillator strength is lowered dramatically resulting in PL-lifetimes of many μs at 300 K, compared to ns decay times in the direct gap nanocrystallites. However, the quantum yield in both materials is of the order of a few percent because of efficient quenching of radiationless transitions [1, 6, 7].
  • 10
    • 0043207098 scopus 로고    scopus 로고
    • (Edited by Lockwood, D.J., Fauchet, P.M., Koshida, N. and Brueck, S.R.J.), The Electrochemical Society, Pennington
    • Rehm, J.M., McLendon, G.L. and Fauchet, P.M., Advanced Luminescent Materials (Edited by Lockwood, D.J., Fauchet, P.M., Koshida, N. and Brueck, S.R.J.), p. 212. The Electrochemical Society, Pennington, 1996.
    • (1996) Advanced Luminescent Materials , pp. 212
    • Rehm, J.M.1    McLendon, G.L.2    Fauchet, P.M.3
  • 12
    • 0039581909 scopus 로고    scopus 로고
    • (Edited by Lockwood, D.J., Fauchet, P.M., Koshida, N. and Brueck, S.R.J.), The Electrochemical Society, Pennington
    • Lockwood, D.J. and Wang, A., Advanced Luminescent Materials (Edited by Lockwood, D.J., Fauchet, P.M., Koshida, N. and Brueck, S.R.J.), p. 166. The Electrochemical Society, Pennington, 1996.
    • (1996) Advanced Luminescent Materials , pp. 166
    • Lockwood, D.J.1    Wang, A.2
  • 25
    • 0042204815 scopus 로고    scopus 로고
    • in press
    • To cover the spectral range from 1 to 4 eV, the reflection has to be measured by different techniques: The refractive index related reflection, determined from Fabry-Pérot interference fringes in transmission, is spectrally combined with the near UV experimental data. It is then convoluted with the transmission of Fig. 1 into the absorption coefficient. We take into account thin film interferences and correct for porosity for direct comparison with bulk c-Si (von Behren, J., Zacharias, M., Chimowitz, E.H. and Fauchet, P.M., Electrochem. Soc. Symp. Proc., 1997, in press).
    • (1997) Electrochem. Soc. Symp. Proc.
    • Von Behren, J.1    Zacharias, M.2    Chimowitz, E.H.3    Fauchet, P.M.4
  • 27
    • 85033880518 scopus 로고    scopus 로고
    • note
    • When the crystallite size decreases from 43 Å to 24 Å, the PL intensity increases by more than 3 orders of magnitude [15] to reach an external quantum efficiency of 8.1% at room temperature.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.