Bulletin of the Korean Chemical Society

  • 제25권4호
  • /
  • Pages.525-528
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  • 2004
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Encapsulated Silicon Nanocrystals Formed in Silica by Ion Beam Synthesis

  • Choi, Han-Woo (Korean Institute of Geoscience and Mineral Resources) ;
  • Woo, Hyung-Joo (Korean Institute of Geoscience and Mineral Resources) ;
  • Kim, Joon-Kon (Korean Institute of Geoscience and Mineral Resources) ;
  • Kim, Gi-Dong (Korean Institute of Geoscience and Mineral Resources) ;
  • Hong, Wan-Hong (Korean Institute of Geoscience and Mineral Resources) ;
  • Ji, Young-Yong (Korean Institute of Geoscience and Mineral Resources)
  • 발행 : 2004.04.20
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초록

The photoluminescence (PL) emission of Si nanocrystals synthesized by 400 keV Si ion implanted in $SiO_2$ is studied as a function of ion dose and annealing time. The formation of nanocrystals at around 600 nm from the surface was confirmed by RBS and HRTEM, and the Si nanocrystals showed a wide and very intense PL emission at 700-900 nm. The intensity of this emission showed a typical behaviour with a fast transitory increase to reach a saturation with the annealing time, however, the red shift increased continuously because of the Ostwald ripening. The oversaturation of dose derived a decrease of PL intensity because of the diminishment of quantum confinement. A strong enhancement of PL intensity by H passivation was confirmed also, and the possible mechanism is discussed.

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피인용 문헌

  1. ZnO Nanoparticles with Hexagonal Cone, Hexagonal Plate, and Rod Shapes: Synthesis and Characterization vol.29, pp.10, 2004, https://doi.org/10.5012/bkcs.2008.29.10.1960