New Mo 6 Te 6 Sub‐Nanometer‐Diameter Nanowire Phase from 2H‐MoTe 2

A novel phase transition, from multilayered 2H‐MoTe 2 to a parallel bundle of sub‐nanometer‐diameter metallic Mo 6 Te 6 nanowires (NWs) driven by catalyzer‐free thermal‐activation (400–500 °C) under vacuum, is demonstrated. The NWs form along the 〈11–20〉 2H‐MoTe 2 crystallographic directions with lengths in the micrometer range. The metallic NWs can act as an efficient hole injection layer on top of 2H‐MoTe 2 due to favorable band‐alignment. In particular, an atomically sharp MoTe 2 /Mo 6 Te 6 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.