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  • Optical transitions in silicon nanocrystals with different surface passivations were probed at low temperatures on a single-particle level. A type of quasidirect recombination process, different from the quantum-confined exciton transition, is identified. The luminescence spectra have different emission energies, but the contribution of a no-phonon transition is significantly higher than expected from the quantum-confinement model. Its relative strength was found to be temperature dependent, suggesting spatial localization of excitons as a possible origin.
  • Optical transitions in silicon nanocrystals with different surface passivations were probed at low temperatures on a single-particle level. A type of quasidirect recombination process, different from the quantum-confined exciton transition, is identified. The luminescence spectra have different emission energies, but the contribution of a no-phonon transition is significantly higher than expected from the quantum-confinement model. Its relative strength was found to be temperature dependent, suggesting spatial localization of excitons as a possible origin. (en)
Title
  • Photoluminescence measurements of zero-phonon optical transitions in silicon nanocrystals
  • Photoluminescence measurements of zero-phonon optical transitions in silicon nanocrystals (en)
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  • Photoluminescence measurements of zero-phonon optical transitions in silicon nanocrystals
  • Photoluminescence measurements of zero-phonon optical transitions in silicon nanocrystals (en)
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  • RIV/00216208:11320/11:10109241!RIV12-MSM-11320___
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  • P(LC510), Z(MSM0021620835)
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  • 12
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  • 220264
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  • RIV/00216208:11320/11:10109241
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  • phonon; nanocrystal; silicon; luminescence (en)
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  • US - Spojené státy americké
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  • [47C545065385]
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  • Physical Review B - Condensed Matter and Materials Physics
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  • 84
http://linked.open...iv/tvurceVysledku
  • Linnros, Jan
  • Valenta, Jan
  • Fujii, M.
  • Mitsuishi, K.
  • Sychugov, I.
http://linked.open...ain/vavai/riv/wos
  • 000295484300012
http://linked.open...n/vavai/riv/zamer
issn
  • 1098-0121
number of pages
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  • 10.1103/PhysRevB.84.125326
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  • 11320
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