Print Email Facebook Twitter Charge Mobility and Dynamics in Spin-Crossover Nanoparticles Studied by Time-Resolved Microwave Conductivity Title Charge Mobility and Dynamics in Spin-Crossover Nanoparticles Studied by Time-Resolved Microwave Conductivity Author Dugay, J. (TU Delft QN/van der Zant Lab; Universidad de Valencia (ICMol); Kavli institute of nanoscience Delft) Evers, W.H. (TU Delft BN/Technici en Analisten; Kavli institute of nanoscience Delft) Torres-Cavanillas, Ramón (Universidad de Valencia (ICMol)) Giménez-Marqués, Mónica (Universidad de Valencia (ICMol)) Coronado, Eugenio (Universidad de Valencia (ICMol)) van der Zant, H.S.J. (TU Delft QN/van der Zant Lab; Kavli institute of nanoscience Delft) Date 2018 Abstract We use the electrodeless time-resolved microwave conductivity (TRMC) technique to characterize spin-crossover (SCO) nanoparticles. We show that TRMC is a simple and accurate means for simultaneously assessing the magnetic state of SCO compounds and charge transport information on the nanometer length scale. In the low-spin state from liquid nitrogen temperature up to 360 K the TRMC measurements present two well-defined regimes in the mobility and in the half-life times, in which the former transition temperature TR occurs near 225 K. Below TR, we propose that an activationless regime taking place associated with short lifetimes of the charge carriers points at the presence of shallow-trap states. Above TR, these states are thermally released, yielding a thermally activated hopping regime where longer hops increase the mobility and, concomitantly, the barrier energy. The activation energy could originate not only from intricate contributions such as polaronic self-localizations but also from dynamic disorder due to phonons and/or thermal fluctuations of SCO moieties. To reference this document use: http://resolver.tudelft.nl/uuid:587b1e97-42ac-4751-8a03-233e811d5b06 DOI https://doi.org/10.1021/acs.jpclett.8b02267 Embargo date 2019-03-13 ISSN 1948-7185 Source The Journal of Physical Chemistry Letters, 5672-5678 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2018 J. Dugay, W.H. Evers, Ramón Torres-Cavanillas, Mónica Giménez-Marqués, Eugenio Coronado, H.S.J. van der Zant Files PDF acs.jpclett.8b02267taverne.pdf 1.77 MB Close viewer /islandora/object/uuid:587b1e97-42ac-4751-8a03-233e811d5b06/datastream/OBJ/view