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

The Electrical Double Layer01:30

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

You might also read

Related Articles

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

Sort by
Same author

The Role of Histone Methylation in Heart Failure: Epigenetic Mechanisms and Therapeutic Perspectives.

Drug design, development and therapy·2026
Same author

Direct Observations of Ion Densities at Functionalized Interfaces to Test Hypotheses Regarding the Origin of Specific Ion Effects.

The journal of physical chemistry letters·2025
Same author

Perioperative Blood Transfusion, Postoperative Hemoglobin, and Clinical Outcomes in Neonates: A Retrospective Observational Study From a Large Quaternary Hospital.

Anesthesia and analgesia·2025
Same author

Construction and evaluation of a neonatal septic shock prediction model based on multimodal data.

Medicine·2025
Same author

Interfacial and Structural Evolution of LiMn<sub>2</sub>O<sub>4</sub> in an Ionogel Electrolyte Revealed by <i>In Operando</i> X-ray Scattering.

ACS applied materials & interfaces·2025
Same author

Modifying Specific Ion Effects: Studies of Monovalent Ion Interactions with Amines.

The journal of physical chemistry. B·2024

Related Experiment Video

Updated: Jul 10, 2026

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes
07:44

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

Published on: November 16, 2018

Molecularly "engineered" anode adsorbates for probing OLED interfacial structure-charge injection/luminance

Qinglan Huang1, Guennadi Evmenenko, Pulak Dutta

  • 1Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL 60208-3113, USA.

Journal of the American Chemical Society
|December 4, 2003
PubMed
Summary

Researchers explored molecule-scale effects at organic light-emitting diode (OLED) interfaces using self-assembled molecules. Precise molecular structure control at the anode interface significantly improved OLED performance and efficiency.

More Related Videos

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
11:44

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds

Published on: October 18, 2018

Development of Efficient OLEDs from Solution Deposition
07:09

Development of Efficient OLEDs from Solution Deposition

Published on: November 4, 2022

Related Experiment Videos

Last Updated: Jul 10, 2026

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes
07:44

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

Published on: November 16, 2018

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
11:44

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds

Published on: October 18, 2018

Development of Efficient OLEDs from Solution Deposition
07:09

Development of Efficient OLEDs from Solution Deposition

Published on: November 4, 2022

Area of Science:

  • Materials Science
  • Organic Electronics
  • Surface Chemistry

Background:

  • Organic light-emitting diodes (OLEDs) are crucial for modern displays and lighting.
  • Efficient charge injection at the anode-organic transport layer interface is critical for OLED performance.
  • Controlling interfacial properties at the molecular level is key to optimizing device efficiency.

Purpose of the Study:

  • To investigate the impact of molecule-scale interfacial structure on OLED performance.
  • To establish a relationship between molecular architecture, charge injection, and electroluminescence.
  • To develop highly efficient OLEDs through precise interfacial engineering.

Main Methods:

  • Synthesis of ITO anode-linked silyltriarylamine molecules with varying aryl groups and linker densities.
  • Utilizing a self-assembly approach to create well-defined molecular interfaces.
  • Characterization of interfacial properties using electrochemical methods to determine electron-transfer rates.

Main Results:

  • Demonstrated significant variations in hole injection magnitude and OLED performance based on molecular structure.
  • Correlated nanoscale interfacial chemical structure with charge injection efficiency.
  • Achieved highly efficient OLEDs with brightness up to ~70,000 cd/m² and ~2.5% forward external quantum efficiency.

Conclusions:

  • Molecule-scale structure at the anode-organic transport layer interface profoundly influences OLED performance.
  • Precise control over molecular design and self-assembly enables optimization of charge injection and device efficiency.
  • This approach offers a pathway to fabricating brighter and more efficient organic light-emitting diodes.