New Mo6Te6 Sub‐Nanometer‐Diameter Nanowire Phase from 2H‐MoTe2. Issue 18 (10th March 2017)

• Record Type: Journal Article
• Authors: Zhu, Hui; Wang, Qingxiao; Zhang, Chenxi; Addou, Rafik; Cho, Kyeongjae; Wallace, Robert M.; Kim, Moon J.
• Is Part Of: Advanced materials. Volume 29:Issue 18(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-03-10
• Subjects: annealing -- nanowires -- molybdenum ditelluride -- phase transitions; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201606264
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : A novel phase transition, from multilayered 2H‐MoTe2 to a parallel bundle of sub‐nanometer‐diameter metallic Mo6 Te6 nanowires (NWs) driven by catalyzer‐free thermal‐activation (400–500 °C) under vacuum, is demonstrated. The NWs form along the 〈11–20〉 2H‐MoTe2 crystallographic directions with lengths in the micrometer range. The metallic NWs can act as an efficient hole injection layer on top of 2H‐MoTe2 due to favorable band‐alignment. In particular, an atomically sharp MoTe2 /Mo6 Te6 interface and van der Waals gap with the 2H layers are preserved. The work highlights an alternative pathway for forming a new transition metal dichalcogenide phase and will enable future exploration of its intrinsic transportation properties. Abstract : A novel phase transition, from multilayered 2H‐MoTe2 to a parallel bundle of metallic Mo6 Te6 sub‐nanometer‐diameter nanowires, with lengths in the micrometer range driven by catalyzer‐free thermal‐activation (400–500 °C) under vacuum, is demonstrated. This work highlights an alternative pathway for forming a new transition metal dichalcogenide phase, and enables future exploration of its intrinsic transportation properties.