Proton intercalated two-dimensional WO3 nano-flakes with enhanced charge-carrier mobility at room temperature
Serge Zhuiykov, Eugene Kats, Benjamin Carey, Sivacarendran Balendhran
Nanoscale | ROYAL SOC CHEMISTRY | Published : 2014
Quasi two-dimensional (Q2D) semiconducting metal oxides with enhanced charge carrier mobility hold tremendous promise for nano-electronics, photonics, catalysis, nano-sensors and electrochromic applications. In addition to graphene and metal dichalcogenides MX2 (M = Mo, W; X = S, Se, Te), 2D sub-stoichiometric WO(3-x) is gaining importance as a promising semiconductor material for field-effect-transistor (FET) based devices. A combination of high permittivity, suppression of the Coulomb effects, and their stratified structure enhances the carrier mobility in such a material. Additionally, the sub-stoichiometry of this semiconductor oxide allows the reduction of the bandgap and increase of th..View full abstract
The work was supported by the Research and Development Program of both CSIRO Sensors and Sensor Networks Transformational Capability Platform (SSN TCP) and CSIRO Materials Science and Engineering Division. The authors are grateful to Dr J.Z. Ou (RMIT University) for his assistance in optical absorption measurements and bandgap calculations and to Dr Michael Breedon (CSIRO) for helpful discussion of the results obtained.