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Updated: Oct 4, 2025

A Standard and Reliable Method to Fabricate Two-Dimensional Nanoelectronics

A Standard and Reliable Method to Fabricate Two-Dimensional Nanoelectronics

Published on: August 28, 2018

Two-dimensional graphyne-graphene heterostructure for all-carbon transistors.

Jing Huang¹, Jun Kang¹

¹Beijing Computational Science Research Center, 100193 Beijing, People's Republic of China.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|February 2, 2022

Summary

Semiconducting graphyne and graphene heterostructures exhibit excellent electron transport properties for next-generation field-effect transistors (FETs). These all-carbon devices offer tunable n-type or p-type contacts, paving the way for advanced electronics.

Keywords:

Ohmic contact Schottky barrier height all-carbon electron tunneling field effect transistors graphyne two-dimensional heterostructure

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Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Published on: July 18, 2025

Area of Science:

Materials Science
Condensed Matter Physics
Nanotechnology

Background:

Two-dimensional (2D) graphyne is a promising semiconducting carbon allotrope for high-mobility applications.
All-carbon field-effect transistors (FETs) are under development for next-generation electronics.
Van der Waals heterostructures offer unique electronic properties through material stacking.

Purpose of the Study:

To investigate the electronic properties of 2D graphyne and graphene (GY/G) van der Waals heterostructures.
To determine the suitability of GY/G heterostructures for all-carbon FETs.
To explore methods for tuning the electronic contact properties of GY/G heterostructures.

Main Methods:

First-principles calculations were employed to simulate the electronic structure of GY/G heterostructures.
Analysis of band dispersion, charge transfer, and Fermi level alignment was performed.
The effect of external electric fields and doping on Schottky barrier height (SBH) was investigated.

Main Results:

The band dispersion of individual graphene and graphyne layers remained intact upon heterostructure formation.
Charge transfer from graphene to graphyne resulted in an n-type Ohmic contact with zero SBH.
Efficient electron tunneling and tunable contact properties (n-type to p-type) were demonstrated.

Conclusions:

GY/G heterostructures exhibit excellent electron transport properties, making them suitable for 2D FETs.
Tunable SBH via external electric fields or doping offers design flexibility for electronic devices.
These findings provide valuable insights for the development of advanced all-carbon electronic devices.