Laser-assisted large-area and enhanced growth of MoS2 and WS2 crystals for energy applications

Parvin Fathi-Hafshejani; Jafar Orangi; Majid Beidaghi; Masoud Mahjouri-Samani

doi:10.1117/12.2608302

1 April 2022 Laser-assisted large-area and enhanced growth of MoS₂ and WS₂ crystals for energy applications

Parvin Fathi-Hafshejani, Jafar Orangi, Majid Beidaghi, Masoud Mahjouri-Samani

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Proceedings Volume PC11990, Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2022; PC1199009 (2022) https://doi.org/10.1117/12.2608302
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

Here we report the direct growth of hierarchically architectured molybdenum disulfide (MoS2) and tungsten disulfide (WS2) crystals on molybdenum and tungsten substrates through an innovative hybrid fabrication method involving laser structuring coupled with a sulfurization process. This laser surface modification process not only provides the ability to design specific micro/nanostructured patterns but also significantly enhances the sulfurization and MoS2 growth kinetics. The electrochemical performance of the architectured MoS2 and WS2 electrodes are investigated in a solid-state lithium-ion battery to demonstrated their enhanced functionality compared to their unstructured counterparts. The improved cycling performance is attributed to the open channels between the 2D layers and more space available for expansion/contraction due to Li-ion insertion and extraction.

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Citation Download Citation

Parvin Fathi-Hafshejani, Jafar Orangi, Majid Beidaghi, and Masoud Mahjouri-Samani "Laser-assisted large-area and enhanced growth of MoS₂ and WS₂ crystals for energy applications", Proc. SPIE PC11990, Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2022, PC1199009 (1 April 2022); https://doi.org/10.1117/12.2608302

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KEYWORDS

Crystals

Laser crystals

Laser applications

Molybdenum

Tungsten

Photonic crystals

Scanning electron microscopy

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