Efficient light emission from crystalline and amorphous silicon nanostructures

  • Kanemitsu Y
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Abstract

Optical and electronic properties of crystalline silicon (c-Si) and amorphous silicon (a-Si) nanostructures are reviewed. The photoluminescence (PL) peak energies of c-Si and a-Si nanostructures are blueshifted from those of bulk c-Si and a-Si. The temperature dependence of the PL intensity is drastically improved in c-Si and a-Si nanostructures, and efficient luminescence from c-Si and a-Si nanostructures is observed at room temperature. The quantum confinement, spatial confinement, and surface effects on luminescence properties are summarized and the PL mechanism of silicon nanostructures is discussed. © 2002 Elsevier Science B.V. All rights reserved.

Author-supplied keywords

  • Excitons
  • Quantum confinement
  • Silicon nanostructures
  • Spatial confinement

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Authors

  • Yoshihiko Kanemitsu

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