Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Fermi Level Dynamics01:12

Fermi Level Dynamics

341
The vacuum level denotes the energy threshold required for an electron to escape from a material surface. It is usually positioned above the conduction band of a semiconductor and acts as a benchmark for comparing electron energies within various materials.
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
341
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

507
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...
507

You might also read

Related Articles

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

Sort by
Same author

2D Material light-emitting transistor with a dynamically controllable emission location for optimized waveguide coupling on silicon.

Science advances·2026
Same author

SUANPAN: scalable photonic linear vector machine.

Light, science & applications·2025
Same author

High-Gain PMMA-Modified Graphene Photodetectors for Dual-Wavelength Secure Communication Utilizing Distinct Temporal Photoresponses.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2025
Same author

Extreme Thermal Insulation and Tradeoff of Thermal Transport Mechanisms between Graphene and WS<sub>2</sub> Monolayers.

Advanced materials (Deerfield Beach, Fla.)·2024
Same author

Ultrasensitive Detection of Biomarkers in a Color-Switchable Microcavity-Reactor Laser.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2022
Same author

Injection-free multiwavelength electroluminescence devices based on monolayer semiconductors driven by an alternating field.

Science advances·2022
Same journal

Enriching Magneto-Optical Functionalities in Iron Garnet Films via Compensation-Driven Magnetic Tuning.

Advanced materials (Deerfield Beach, Fla.)·2026
Same journal

Quartz-Like Supramolecular Glass Enabled by Host-Guest Size Mismatch.

Advanced materials (Deerfield Beach, Fla.)·2026
Same journal

Reliable and Reusable All-Solid-State Contact-Type Pre-Lithiation Platform for High-Performance All-Solid-State Batteries.

Advanced materials (Deerfield Beach, Fla.)·2026
Same journal

Cross-Scale Design of Electrocatalytic Systems for Steering Alcohol Oxidation Toward High-Value-Added Chemicals.

Advanced materials (Deerfield Beach, Fla.)·2026
Same journal

Synergistic Control of Radiative Decay and Exciton Splitting Dynamics for Efficient Organic Solar Cells Processed by Non-Halogenated Solvent.

Advanced materials (Deerfield Beach, Fla.)·2026
Same journal

Nitrogen-Incorporated Silicon Dioxide Interlayer Enables Pinhole-Reduced and Robust TOPCon With a High Implied Open-Circuit Voltage over 760 mV.

Advanced materials (Deerfield Beach, Fla.)·2026
See all related articles

Related Experiment Video

Updated: Sep 11, 2025

Developing High Performance GaP/Si Heterojunction Solar Cells
10:31

Developing High Performance GaP/Si Heterojunction Solar Cells

Published on: November 16, 2018

7.6K

Double Heterostructures for Monolayer Materials with Record Quantum Efficiency.

Yutong Zhong1,2,3,4,5, Yongzhuo Li1,3,4,5, Jiabin Feng1,3,4,5

  • 1Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China.

Advanced Materials (Deerfield Beach, Fla.)
|August 16, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel 2D material heterostructure for efficient light-emitting diodes (LEDs). This breakthrough overcomes previous limitations, enabling practical applications in micro-LED displays and on-chip light sources.

Keywords:
2D semiconductordouble heterostructureelectroluminescencequantum efficiencytransition metal dichalcogenide

More Related Videos

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

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

Published on: August 2, 2019

9.7K
Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO
08:14

Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO

Published on: July 31, 2016

12.3K

Related Experiment Videos

Last Updated: Sep 11, 2025

Developing High Performance GaP/Si Heterojunction Solar Cells
10:31

Developing High Performance GaP/Si Heterojunction Solar Cells

Published on: November 16, 2018

7.6K
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

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

Published on: August 2, 2019

9.7K
Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO
08:14

Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO

Published on: July 31, 2016

12.3K

Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • 2D semiconductor materials offer advantages for compact optoelectronic devices like LEDs and lasers.
  • The absence of type-I double-heterostructures has limited the efficiency of 2D material-based LEDs and lasers.

Purpose of the Study:

  • To propose and demonstrate a novel lateral double-heterostructure using 2D materials.
  • To overcome the limitations of existing 2D material-based light-emitting devices.

Main Methods:

  • Fabrication of a lateral type-I heterostructure using multilayer WSe2 and monolayer MoTe2.
  • Utilized double back-gates for device control.
  • Investigated carrier injection, transport, and radiative recombination mechanisms.

Main Results:

  • Achieved a record external quantum efficiency of 1% for p-n junctions based on transition metal dichalcogenides.
  • Demonstrated a 40-fold increase in electroluminescent intensity at room temperature.
  • Showcased a 24-fold enhancement in power efficiency compared to single monolayer MoTe2 devices.

Conclusions:

  • The proposed WSe2/MoTe2 heterostructure effectively enables efficient light emission by synergizing material properties.
  • This strategy is extendable to other 2D semiconductor LEDs, paving the way for practical applications.
  • Potential applications include micro-LED displays, electrically injected 2D lasers, and silicon-based on-chip light sources.