High-frequency EPR and ENDOR spectroscopy on semiconductor nanocrystals

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 2005 Netherlands English Publisher:WileyJournal:Magnetic Resonance in Chemistry, volume 43, pages S140-S144 (issn: 0749-1581, eissn: 1097-458X,

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Authors: Orlinski, S.B.; Blok, H.; Groenen, E.J.J.; Schmidt, J.; Baranov, P.G.; de Mello Donega, C.; Meijerink, A.;

doi: 10.1002/mrc.1686

pmid: 16235209

High-frequency EPR and ENDOR spectroscopy on semiconductor nanocrystals

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Abstract

EPR and ENDOR experiments at 95 GHz on ZnO nanoparticles reveal the presence of shallow donors related to interstitial Li and Na atoms. The experiments allowed, for the first time, to probe the effect of confinement on the shape of the electronic wave function. In addition, it is observed that the 67Zn nuclear spins become polarized upon saturation of the EPR transition. This Overhauser effect is induced by the zero-point vibrations of the phonon system in the nanoparticles.

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Netherlands

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Leiden University
Netherlands
Utrecht University
Netherlands

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