Print Email Facebook Twitter Franckeite as a naturally occurring van der Waals heterostructure Title Franckeite as a naturally occurring van der Waals heterostructure Author Molina-Mendoza, Aday J. (Universidad Autónoma de Madrid) Giovanelli, Emerson (Universidad Autónoma de Madrid) Paz, Wendel S. (Universidad Autónoma de Madrid) Ninõ, Miguel Angel (Universidad Autónoma de Madrid) Island, J.O. (TU Delft QN/van der Zant Lab; Kavli institute of nanoscience Delft) Evangeli, Charalambos (Universidad Autónoma de Madrid) Aballe, Luciá (ALBA Synchrotron Light Facility) Foerster, Michael (ALBA Synchrotron Light Facility) van der Zant, H.S.J. (TU Delft QN/van der Zant Lab; Kavli institute of nanoscience Delft) Rubio-Bollinger, Gabino (Universidad Autónoma de Madrid) Agraït, Nicolás (Universidad Autónoma de Madrid) Palacios, JJ (Universidad Autónoma de Madrid) Pérez, Emilio M. (Universidad Autónoma de Madrid) Castellanos-Gomez, Andres (Universidad Autónoma de Madrid) Date 2017-02-13 Abstract The fabrication of van der Waals heterostructures, artificial materials assembled by individual stacking of 2D layers, is among the most promising directions in 2D materials research. Until now, the most widespread approach to stack 2D layers relies on deterministic placement methods, which are cumbersome and tend to suffer from poor control over the lattice orientations and the presence of unwanted interlayer adsorbates. Here, we present a different approach to fabricate ultrathin heterostructures by exfoliation of bulk franckeite which is a naturally occurring and air stable van der Waals heterostructure (composed of alternating SnS 2-like and PbS-like layers stacked on top of each other). Presenting both an attractive narrow bandgap (<0.7 eV) and p-type doping, we find that the material can be exfoliated both mechanically and chemically down to few-layer thicknesses. We present extensive theoretical and experimental characterizations of the material's electronic properties and crystal structure, and explore applications for near-infrared photodetectors. To reference this document use: http://resolver.tudelft.nl/uuid:a133d32b-8191-4137-9ac2-1a7fc91240d2 DOI https://doi.org/10.1038/ncomms14409 ISSN 2041-1723 Source Nature Communications, 8 Part of collection Institutional Repository Document type journal article Rights © 2017 Aday J. Molina-Mendoza, Emerson Giovanelli, Wendel S. Paz, Miguel Angel Ninõ, J.O. Island, Charalambos Evangeli, Luciá Aballe, Michael Foerster, H.S.J. van der Zant, Gabino Rubio-Bollinger, Nicolás Agraït, JJ Palacios, Emilio M. Pérez, Andres Castellanos-Gomez Files PDF ncomms14409.pdf 2.4 MB Close viewer /islandora/object/uuid:a133d32b-8191-4137-9ac2-1a7fc91240d2/datastream/OBJ/view