Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Metal-Semiconductor Junctions

Metal-Semiconductor Junctions

The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Hybrid solid-liquid optics enable scalable, high-resolution light-sheet microscopy across diverse immersion media.

Nature biotechnology·2026

Same author

Dendrobium officinale leaf extract extends the mean lifespan in Caenorhabditis elegans via the DAF-16/SOD-3 axis.

Biogerontology·2026

Same author

Chiral Molecular Intercalation Enables Light-Controlled 2D Multiferroic Heterostructures.

Nano letters·2026

Same author

A chromosome-level genome assembly of the waterlily aphid Rhopalosiphum nymphaeae Linnaeus.

Scientific data·2026

Same author

Analysis and application of microbiota in fermentation pit muds used for Chinese strong-flavor liquor production.

AMB Express·2026

Same author

A Novel Fibrosis-Integrated Nomogram for Predicting Survival in Oral Squamous Cell Carcinoma Patients with Oral Submucous Fibrosis: A Retrospective Cohort Study.

Cancer management and research·2026

Search research articles

Related Experiment Video

Updated: May 5, 2026

Graphene Coatings for Biomedical Implants

Graphene Coatings for Biomedical Implants

Published on: March 1, 2013

Realistic metal-graphene contact structures.

Cheng Gong¹, Stephen McDonnell, Xiaoye Qin

¹Department of Materials Science and Engineering, The University of Texas at Dallas , Richardson, Texas 75080, United States.

|November 23, 2013

Summary

This summary is machine-generated.

Metal-graphene contact resistance is often misinterpreted. New research shows metal-graphene reactions form end-contacts, not side-contacts, challenging previous models for understanding these electronic properties.

More Related Videos

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Related Experiment Videos

Last Updated: May 5, 2026

Graphene Coatings for Biomedical Implants

Graphene Coatings for Biomedical Implants

Published on: March 1, 2013

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Area of Science:

Materials Science
Condensed Matter Physics
Surface Science

Background:

Metal-graphene junction contact resistance is crucial for electronic devices.
Reported values show inconsistencies, suggesting a need for re-evaluation of contact models.

Purpose of the Study:

To investigate the true nature of metal-graphene contacts.
To challenge the prevailing side-contact model using in situ analysis.

Main Methods:

In situ X-ray photoelectron spectroscopy (XPS) was employed.
The wetting of metals (Pd, Ti) on graphene synthesized on copper foil was studied.

Main Results:

Metals like Palladium (Pd) and Titanium (Ti) react with graphene, forming carbides.
Carbide formation involves breaking of carbon-carbon bonds in graphene.
This leads to an end-contact geometry, contradicting the side-contact model.

Conclusions:

The spontaneous formation of metal-graphene end-contacts is validated.
Metal-graphene reactions, not simple diffusion, drive contact geometry.
This finding necessitates a revision of how metal-graphene junction properties are interpreted.