Radiative and nonradiative recombination of self-trapped exciton on silicon nanocrystal interface |
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Authors: | A V Gert I N Yassievich |
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Institution: | 1148. Ioffe Physical Technical Institute, Russian Academy of Sciences, St. Petersburg, 194021, Russia
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Abstract: | The theory of the multiphonon and radiative recombination of a self-trapped exciton on the interface of a silicon nanocrystal in a SiO2 matrix is developed. Self-trapped excitons play a key role in the hot carrier dynamics in nanocrystals under photoexcitation. The ratio of the probabilities of the multiphonon and radiative recombination of the self-trapped exciton is estimated. The probabilities of exciton tunnel transition from the self-trapped state to a nanocrystal are calculated for nanocrystals of various sizes. The infrared range spectrum of the luminescence of the self-trapped exciton is obtained. |
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