Large-Scale Deposition of Single Crystal Graphene on any Flat Surface

Large-Scale Deposition of Single Crystal Graphene on any Flat Surface

Scientific Achievement
Figure Caption: A jet shown in the top schematic directs chemical vapor deposition of monolayer graphene on nearly any substrate. Films of 12 inches have been demonstrated and could be scaled up. Low energy electron diffraction (bottom) at the CNMS verifies the films are single crystal. (hi-res image)

Controlled growth of large-scale single crystal graphene of any length/width on virtually any flat substrate.

Significance and Impact

This simple, wafer-scale process enables applications of graphene (or other 2D materials) for electronics or sensors.

Research Details

- A jet projects the source materials onto a moving substrate, effectively spray painting a film.

- Optimization produces a monolayer 2D film with a single orientation, suitable for device fabrication.

- Multiple techniques at CNMS have established the structure and quality; field-effect transistors have been demonstrated.

 

Ivan Vlassiouk, Yijing Stehle, Pushpa Raj Pudasaini, Raymond R. Unocic, Philip D. Rack, Arthur P. Baddorf, Ilia N. Ivanov, Nickolay V. Lavrik, Frederick List, Nitant Gupta, Ksenia Bets, Boris I. Yakobson, and Sergei Smirnov, “Evolutionary Selection Growth of Two-Dimensional Materials on Polycrystalline Substrates," Nature Materials 2018. DOI: 10.1038/s41563-018-0019-3

 

CNMS Researchers

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