Science· 2013Q1
One-Dimensional Electrical Contact to a Two-Dimensional Material
- 3,038citations
- Q1SCImago
- 2013year
Short summary
A new edge-contact geometry for 2D materials like graphene enables ballistic transport over >15 micrometers at low temperatures and room-temperature mobility near the theoretical limit.
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Key points
- Introduced a 1D edge-contact geometry for 2D material heterostructures.
- Achieved ballistic transport over distances greater than 15 micrometers at low temperatures.
- Demonstrated room-temperature mobility comparable to the theoretical phonon-scattering limit.
- Separates layer assembly and contact metallization processes.
AI-generated from the title and abstract; the full text is not read.
Abstract
Heterostructures based on layering of two-dimensional (2D) materials such as graphene and hexagonal boron nitride represent a new class of electronic devices. Realizing this potential, however, depends critically on the ability to make high-quality electrical contact. Here, we report a contact geometry in which we metalize only the 1D edge of a 2D graphene layer. In addition to outperforming conventional surface contacts, the edge-contact geometry allows a complete separation of the layer assembly and contact metallization processes. In graphene heterostructures, this enables high electronic performance, including low-temperature ballistic transport over distances longer than 15 micrometers, and room-temperature mobility comparable to the theoretical phonon-scattering limit. The edge-contact geometry provides new design possibilities for multilayered structures of complimentary 2D materials.
The authors' abstract, as published at the source. Science, 2013 · DOI ↗
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Field: Materials Chemistry
Materials ChemistryMaterials Science