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Light from Porous Silicon by Multiphoton Vibronic Excitation

URN to cite this document:
urn:nbn:de:bvb:355-epub-22411
DOI to cite this document:
10.5283/epub.2241
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 and 1084 cm-1. Time-resolved experiments on the luminescence and the ir-induced changes in optical transparency show that the two excitation modes are characterized by different ...

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