Abstract
The morphology modulation of target crystals is important for understanding their growth mechanisms and potential applications. Herein, we report a convenient method for modulating the morphology of MoO(2) by controlling different growth temperatures. With an increase in growth temperature, the morphology of MoO(2) changes from a nanoribbon to a nanoflake. Various characterization methods, including optical microscopy, atomic force microscopy, (vertical and tilted) scanning electron microscopy, Raman spectroscopy, high-resolution transmission electron microscopy, and selected area electron diffraction, were performed to unveil the morphology modulation and lattice structure of MoO(2). Both MoO(2) nanoribbons and nanoflakes display a standing-up growth mode on c-sapphire substrates, and their basal planes are MoO(2)(100). Further investigations into devices based on MoS(2) with Au/Ti/MoO(2) electrodes show the potential applications of MoO(2) in two-dimensional electrodes. These findings are helpful for the synthesis of MoO(2) with different morphologies and applications in the field of optoelectronic nanodevices.