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 semiconductor's...

You might also read

Related Articles

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

Sort by

Same author

Termination-Preserved Ultrahigh Tunneling Magnetoresistance in Altermagnetic KV<sub>2</sub>Se<sub>2</sub>O.

ACS nano·2026

Same author

[Association between genetic polymorphism of tumor necrosis factor and chronic severe hepatitis B in patients].

Zhonghua yi xue za zhi·2007

Same author

In vivo translational inaccuracy in Escherichia coli: missense reporting using extremely low activity mutants of Vibrio harveyi luciferase.

Biochemistry·2007

Same author

[Construction of recombinant adenovirus vector expressing extracellular domain of TbetaR-II-RANTES fusion gene and its anti-tumor effects].

Zhonghua zhong liu za zhi [Chinese journal of oncology]·2007

Same author

[Characteristics, evolution and variation of M genes of human avian H5N1 strains in Guangdong].

Bing du xue bao = Chinese journal of virology·2007

Same author

Dynamic changes in microbial activity and community structure during biodegradation of petroleum compounds: a laboratory experiment.

Journal of environmental sciences (China)·2007

Search research articles

Related Experiment Video

Updated: Jun 30, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Transport Regulation and Quantum Interference Switching in Pyrrole-Graphene Junctions.

Wenhui Fang¹, Junnan Guo¹, Jian Huang²

¹Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China.

The Journal of Physical Chemistry Letters

|June 29, 2026

Summary

This summary is machine-generated.

Pyrrole molecular junctions show tunable quantum transport, including negative differential resistance (NDR) and switching effects. Their properties are controllable via structure and gate voltage for molecular electronics.

More Related Videos

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Electric-field Control of Electronic States in WS₂ Nanodevices by Electrolyte Gating

Published on: April 12, 2018

Related Experiment Videos

Last Updated: Jun 30, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Electric-field Control of Electronic States in WS₂ Nanodevices by Electrolyte Gating

Published on: April 12, 2018

Area of Science:

Quantum Transport
Molecular Electronics
Materials Science

Background:

Molecular junctions are crucial for next-generation electronic devices.
Understanding quantum transport in organic molecules is key to device design.

Purpose of the Study:

Investigate tunable quantum transport in pyrrole-based molecular junctions.
Explore structure-transport correlations for molecular electronic applications.

Main Methods:

First-principles calculations using density functional theory (DFT).
Non-equilibrium Green's function (NEGF) approach for transport analysis.
Coupling pyrrole monomers/oligomers to zigzag graphene nanoribbon electrodes.

Main Results:

Observed negative differential resistance (NDR) and gate-controlled modulation.
Demonstrated destructive quantum interference (DQI)-induced switching with high on/off ratios (up to 6.48 × 10^3).
Current amplitude decreases with oligomer length; peak-to-valley ratio increases (max 17.36).

Conclusions:

Pyrrole molecular junctions offer tunable electronic properties.
Structure-transport correlations are established, highlighting potential for functional molecular devices.
Gate modulation and conformational changes significantly impact device performance.