Abstract
The optical and structural properties of anodically oxidized porous silicon and of siloxene (Si6O3H6) are discussed. Both materials exhibit a strong visible luminescence at room temperature. In siloxene, the luminescence can be traced to six-fold silicon rings which act as efficient radiative recombination centers. In the case of porous silicon, on the other hand, spatial confinement of charge carriers in quantum wires has been proposed as the origin of the luminescence. Based on the similarities between the optical and structural properties observed for certain siloxene derivates and for porous silicon, it is argued that the luminescence in porous silicon actually stems from siloxene derivates formed during the etching process.
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© 1992 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH
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Stutzmann, M. et al. (1992). Visible luminescence from silicon. In: Festkörperprobleme 32. Advances in Solid State Physics, vol 32. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0108628
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DOI: https://doi.org/10.1007/BFb0108628
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