Strain-Induced 2H to 1T' Phase Transition in Suspended MoTe₂ Using Electric Double Layer Gating.

ABSTRACT: MoTe₂ can be converted from the semiconducting (2H) phase to the semimetallic (1T') phase by several stimuli including heat, electrochemical doping, and strain. This type of phase transition, if reversible and gate-controlled, could be useful for low-power memory and logic. In this work, a gate-controlled and fully reversible 2H to 1T' phase transition is demonstrated via strain in few-layer suspended MoTe₂ field effect transistors. Strain is applied by the electric double layer gating of a suspended channel using a single ion conducting solid polymer electrolyte. The phase transition is confirmed by simultaneous electrical transport and Raman spectroscopy. The out-of-plane vibration peak (A_1g)─a signature of the 1T' phase─is observed when V_SG</

SUBMITTER: Awate SS 

PROVIDER: S-EPMC10690768 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature