Charging C-60 islands with the AFM tip

Abstract : We show that electrons can be transferred on demand from an AFM tip into single bulk-like C-60 islands, which are supported on the insulating NaCl(001) surface. We exemplify this by controlled charge-manipulation experiments conducted in ultrahigh vacuum by noncontact AFM (nc-AFM), electrostatic force microscopy (EFM) and Kelvin probe force microscopy (KPFM). KPFM shows a homogeneous contrast at the islands, which is a signature for an equal distribution of the electrons in the T-1u band. The charge dissipates during half a day due to an interaction of the charged C-60 islands with defects in the near surface region of NaCl. Our results open the perspective in photo-voltaics to study charge attachment, stability and charge exchange with the environment of any C-60 bulk-like system.
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Article dans une revue
Nanoscale, Royal Society of Chemistry, 2016, 8 (1), pp.411-419. 〈10.1039/c5nr04541j〉
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Contributeur : Hal Cinam <>
Soumis le : vendredi 3 février 2017 - 10:59:58
Dernière modification le : mercredi 7 novembre 2018 - 10:30:03

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Brice Hoff, Claude R. Henry, Clemens Barth. Charging C-60 islands with the AFM tip. Nanoscale, Royal Society of Chemistry, 2016, 8 (1), pp.411-419. 〈10.1039/c5nr04541j〉. 〈hal-01455012〉

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