title: The MoS2 Nanotubes with Defect-Controlled Electric Properties.
abstract: We describe a two-step synthesis of pure multiwall MoS2 nanotubes with a high degree of homogeneity in size. The Mo6S4I6 nanowires grown directly from elements under temperature gradient conditions in hedgehog-like assemblies were used as precursor material. Transformation in argon-H2S/H2 mixture leads to the MoS2 nanotubes still grouped in hedgehog-like morphology. The described method enables a large-scale production of MoS2 nanotubes and their size control. X-ray diffraction, optical absorption and Raman spectroscopy, scanning electron microscopy with wave dispersive analysis, and transmission electron microscopy were used to characterize the starting Mo6S4I6 nanowires and the MoS2 nanotubes. The unit cell parameters of the Mo6S4I6 phase are proposed. Blue shift in optical absorbance and metallic behavior of MoS2 nanotubes in two-probe measurement are explained by a high defect concentration.
authors: Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia. maja.remskar@ijs.si.
authors: Maja
authors: M
authors: Remskar
authors: Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia.
authors: Ales
authors: A
authors: Mrzel
authors: Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia.
authors: Marko
authors: M
authors: Virsek
authors: Institute of Metals and Technology, Lepi Pot 11, 1000, Ljubljana, Slovenia.
authors: Matjaz
authors: M
authors: Godec
authors: Forschungszentrum Dresden-Rossendorf, Institut für Ionenstrahlphysik, und Materialforschung, D-01314, Dresden, Germany.
authors: Matthias
authors: M
authors: Krause
authors: Forschungszentrum Dresden-Rossendorf, Institut für Ionenstrahlphysik, und Materialforschung, D-01314, Dresden, Germany.
authors: Andreas
authors: A
authors: Kolitsch
authors: Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN, 46556, USA.
authors: Amol
authors: A
authors: Singh
authors: Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN, 46556, USA.
authors: Alan
authors: A
authors: Seabaugh
keywords: Conductivity; Defects; Inorganic Nanotubes; Mo6S4I6; MoS2