Synthesis and Properties of Nanostructured Tungsten Oxide on Au(111)

Rishav Harsh (1) , Mariem Ben Youssef (2) , Cyril Chacon (3) , Vincent Repain (3) , Amandine Bellec (3) , Yann Girard (3) , Sylvie Rousset (3) , Jean-Yves Piquemal (4) , Mahamadou Seydou (4) , Philippe Decorse (4) , Philippe Lang (4) , Jérôme Lagoute (3)

1 MPQ (UMR_7162) - Laboratoire Matériaux et Phénomènes Quantiques
2 ITODYS (UMR_7086) - Interfaces, Traitements, Organisation et Dynamique des Systèmes
3 MPQ (UMR_7162) - Laboratoire Matériaux et Phénomènes Quantiques
4 ITODYS (UMR_7086) - Interfaces, Traitements, Organisation et Dynamique des Systèmes

WO 3 nanostructures have been synthesized on Au(111) through solution processing. Three types of structures have been obtained, reticulated polymeric structures, two dimensional WO 3 (111) and three-dimensional islands. Their electronic properties have been probed by scanning tunneling spectroscopy. The reticulated structure has a featureless spectrum. WO 3 (111) shows n-type semiconducting properties with resonances corresponding to surface states arising from W 5d states. Those oxyde nanostructures are efficiently decoupling the electronic states of molecular adsorbates from the metal substrate.

Domaines: Matière Condensée [cond-mat]

Rishav Harsh, Mariem Ben Youssef, Cyril Chacon, Vincent Repain, Amandine Bellec, et al.. Synthesis and Properties of Nanostructured Tungsten Oxide on Au(111). Journal of Physical Chemistry C, 2021, 125 (1), pp.660-666. ⟨10.1021/acs.jpcc.0c10258⟩. ⟨hal-03397100⟩