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A Multiscale Insight into the Growth of H-Bn: Effect of the Enclosure

33 Pages Posted: 5 Oct 2020 Publication Status: Under Review

See all articles by Yanzhou Ji

Yanzhou Ji

Pennsylvania State University - Materials Science Institute

Kasra Momeni

The Pennsylvania State University - 1Department of Materials Science and Engineering

Long-Qing Chen

Pennsylvania State University - Department of Materials Science and Engineering; Pennsylvania State University - Materials Science Institute

Abstract

Chemical vapor deposition technique and its derivatives have been used to synthesize high-quality 2D materials. However, the lack of fundamental understanding of the governing growth mechanisms and the correlation between large-scale control parameters and mesoscale growth morphologies has hindered their wafer-scale synthesis. We developed a multiscale framework, which correlates the macroscale heat and mass flow with the mesoscale morphology of the as-grown 2D materials. We use hexagonal boron nitride (h-BN) as our model material and investigated the effect of substrate enclosure on growth kinetics and its final morphology. We revealed a lower concentration and a more uniform precursor concentration on the substrate in an enclosed-growth compared to open-growth, and it leads to a more uniform size distribution of the h-BN islands, consistent with existing experimental investigations.

Keywords: Hexagonal Boron Nitride (h-BN), Chemical vapor deposition (CVD), Phase-field, 2D materials, materials synthesis

Suggested Citation

Ji, Yanzhou and Momeni, Kasra and Chen, Long-Qing, A Multiscale Insight into the Growth of H-Bn: Effect of the Enclosure (2020). Available at SSRN: https://ssrn.com/abstract=3681174 or http://dx.doi.org/10.2139/ssrn.3681174

Yanzhou Ji (Contact Author)

Pennsylvania State University - Materials Science Institute ( email )

United States

Kasra Momeni

The Pennsylvania State University - 1Department of Materials Science and Engineering ( email )

Long-Qing Chen

Pennsylvania State University - Department of Materials Science and Engineering ( email )

University Park
State College, PA 16802
United States

Pennsylvania State University - Materials Science Institute ( email )

United States

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