Centimeter-Scale Synthesis of Ultrathin Layered MoO3 by van der Waals Epitaxy

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Aday J. Molina-Mendoza
  • José L. Lado
  • Joshua O. Island
  • Miguel Angel Niño
  • Lucía Aballe
  • Michael Foerster
  • Flavio Y. Bruno
  • Alejandro López-Moreno
  • Luis Vaquero-Garzon
  • Herre S.J. Van Der Zant
  • Gabino Rubio-Bollinger
  • Nicolás Agraït
  • Emilio M. Pérez
  • Joaquín Fernández-Rossier
  • Andres Castellanos-Gomez

Organisaatiot

  • Ramón y Cajal University Hospital
  • International Iberian Nanotechnology Laboratory
  • Kavli Institute of Nanoscience Delft
  • IMDEA Institute
  • Autonomous University of Barcelona
  • University of Geneva
  • Universidad Autónoma de Madrid

Kuvaus

We report on the large-scale synthesis of highly oriented ultrathin MoO3 layers using a simple and low-cost atmospheric pressure, van der Waals epitaxy growth on muscovite mica substrates. By this method, we are able to synthesize high quality centimeter-scale MoO3 crystals with thicknesses ranging from 1.4 nm (two layers) up to a few nanometers. The crystals can be easily transferred to an arbitrary substrate (such as SiO2) by a deterministic transfer method and be extensively characterized to demonstrate the high quality of the resulting crystal. We also study the electronic band structure of the material by density functional calculations. Interestingly, the calculations demonstrate that bulk MoO3 has a rather weak electronic interlayer interaction, and thus, it presents a monolayer-like band structure. Finally, we demonstrate the potential of this synthesis method for optoelectronic applications by fabricating large-area field-effect devices (10 μm × 110 μm in lateral dimensions) and find responsivities of 30 mA W-1 for a laser power density of 13 mW cm-2 in the UV region of the spectrum and also as an electron acceptor in a MoS2-based field-effect transistor.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut4042-4051
Sivumäärä10
JulkaisuChemistry of Materials
Vuosikerta28
Numero11
TilaJulkaistu - 14 kesäkuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 36719923