Temperature-Dependent Morphology Modulation of MoO<sub>2</sub> from 1D Nanoribbons to 2D Nanoflakes for Enhanced Two-Dimensional Electrode Applications
Di Wu,
Tianrong Yi,
Yutao Hu,
Jianxiong Xie,
Yu Deng,
Junqi He,
Yuting Sun,
Jidong Liu,
Qiaoyan Hao,
Wenjing Zhang
Affiliations
Di Wu
State Key Laboratory of Radio Frequency Heterogeneous Integration, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Tianrong Yi
State Key Laboratory of Radio Frequency Heterogeneous Integration, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Yutao Hu
State Key Laboratory of Radio Frequency Heterogeneous Integration, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Jianxiong Xie
State Key Laboratory of Radio Frequency Heterogeneous Integration, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Yu Deng
State Key Laboratory of Radio Frequency Heterogeneous Integration, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Junqi He
State Key Laboratory of Radio Frequency Heterogeneous Integration, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Yuting Sun
State Key Laboratory of Radio Frequency Heterogeneous Integration, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Jidong Liu
State Key Laboratory of Radio Frequency Heterogeneous Integration, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Qiaoyan Hao
State Key Laboratory of Radio Frequency Heterogeneous Integration, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Wenjing Zhang
State Key Laboratory of Radio Frequency Heterogeneous Integration, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
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 MoO2 by controlling different growth temperatures. With an increase in growth temperature, the morphology of MoO2 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 MoO2. Both MoO2 nanoribbons and nanoflakes display a standing-up growth mode on c-sapphire substrates, and their basal planes are MoO2(100). Further investigations into devices based on MoS2 with Au/Ti/MoO2 electrodes show the potential applications of MoO2 in two-dimensional electrodes. These findings are helpful for the synthesis of MoO2 with different morphologies and applications in the field of optoelectronic nanodevices.
