One-dimensional memristive device based on MoO3 nanobelt

Single crystalline MoO3 nanobelts were synthesized by a hydrothermal method, and one-dimensional nano-devices, Au/MoO3/Au, were fabricated with the MoO3 nanobelts. After electroforming under a bipolar voltage sweeping, stable unipolar switching with robust retention appeared, and the ON/OFF states of the unipolar switching differed by a resistance ratio of ∼103. The electroforming could be accounted for by the phase transformation between MoO3 and MoO2, and the unipolar switching by the formation/rupture of MoO2 filaments formed at dislocations or stacking faults.