Liquid-metal-assisted deposition and patterning of molybdenum dioxide at low temperature
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Date
2021-11-10
Journal Title
Journal ISSN
Volume Title
Publisher
American Chemical Society
Abstract
Molybdenum dioxide (MoO2), considering its nearmetallic 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. © 2021 American Chemical Society
Description
Keywords
Liquid metals, Deposition, Molybdenum, Temperature range 0065-0273 K, Energy storage, Electric conductivity, Optoelectronic devices
Citation
Wang, Y., Mayyas, M., Yang, J., Ghasemian, M. B., Tang, J., Mousavi, M., Han, J., Ahmed, M., Baharfar, M., Mao, G., Yao, Y., Esrafilzadeh, D., Cortie, D., & Kalantar-Zadeh, K. (2021). Liquid-metal-assisted deposition and patterning of molybdenum dioxide at low temperature. ACS Applied Materials & Interfaces, 13(44), 53181-53193. https://doi.org/10.1021/acsami.1c15367