1. Liquid-Metal-Assisted Deposition and Patterning of Molybdenum Dioxide at Low Temperature
- Author
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Maedehsadat Mousavi, Mahroo Baharfar, Guangzhao Mao, David L Cortie, Jialuo Han, Mohannad Mayyas, Mohammad B. Ghasemian, Jianbo Tang, Dorna Esrafilzadeh, Kourosh Kalantar-zadeh, Yin Yao, Jiong Yang, Yifang Wang, and Mostak Ahmed
- Subjects
Liquid metal ,Materials science ,Oxide ,chemistry.chemical_element ,Nanotechnology ,02 engineering and technology ,Substrate (electronics) ,Molybdate ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,chemistry.chemical_compound ,chemistry ,Deposition (phase transition) ,General Materials Science ,Gallium ,0210 nano-technology ,Layer (electronics) ,Molybdenum dioxide - Abstract
Molybdenum dioxide (MoO2), considering its near-metallic conductivity and surface plasmonic properties, is a great material for electronics, energy storage devices and biosensing. Yet to this day, room-temperature synthesis of large area MoO2, which allows deposition on arbitrary substrates, has remained a challenge. Due to their reactive interfaces and specific solubility conditions, gallium-based liquid metal alloys offer unique opportunities for synthesizing materials that can meet these challenges. Herein, a substrate-independent liquid metal-based method for the room temperature deposition and patterning of MoO2 is presented. By introducing a molybdate precursor to the surrounding of a eutectic gallium-indium alloy droplet, a uniform layer of hydrated molybdenum oxide (H2MoO3) is formed at the interface. This layer is then exfoliated and transferred onto a desired substrate. Utilizing the transferred H2MoO3 layer, a laser-writing technique is developed which selectively transforms this H2MoO3 into crystalline MoO2 and produces electrically conductive MoO2 patterns at room temperature. The electrical conductivity and plasmonic properties of the MoO2 are analyzed and demonstrated. The presented metal oxide room-temperature deposition and patterning method can find many applications in optoelectronics, sensing, and energy industries.
- Published
- 2021