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Excitation of the porous silicon photoluminescence by a multiphoton vibronic process

URN to cite this document:
urn:nbn:de:bvb:355-epub-22351
Diener, J. ; Ben-Chorin, M. ; Kovalev, D. ; Ganichev, Sergey ; Koch, F.
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Date of publication of this fulltext: 05 Aug 2009 13:38


Abstract

We study the emission of photons from porous Si after high-level vibrational excitation in the Si---O absorption band using a pulsed CO2 laser. Narrow resonances in the efficiency of light generation are discovered at 1030 cm−1 and 1084 cm−1. For excitation at 1030 cm−1 the familiar photoluminescence band of porous Si appears. Time-resolved pump-to-probe experiments show the same decay times for ...

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