Metal‐Insulator Transition: Gate‐Induced Massive and Reversible Phase Transition of VO2 Channels Using Solid‐State Proton Electrolytes (adv. Funct. Mater. 39/2018)

In article number 1802003, Ji Young Jo, Junwoo Son, and co-workers apply a gate bias to solid-state proton conductors to control the electronic phases in the VO2 channel, yielding a reversible phase transition between metal and insulator. The proton-induced electronic phase transition occurs by giant modulation of out-of-plane lattice parameters. The results demonstrate the potential for electronic devices that use ionic/electronic coupling.