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

You might also read

Related Articles

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

Sort by
Same author

2D Semiconductor Nanosheets Supported on Colloidal Quantum Cubes.

ACS nano·2026
Same author

Intravascular imaging-guided versus coronary angiography-guided percutaneous coronary intervention: Meta-analysis and trial sequential analysis of randomized controlled trials.

Medicine·2026
Same author

Advances in Colloidal InP-Based Quantum Dots for Photocatalytic Hydrogen Evolution.

ACS omega·2026
Same author

Down-regulation of EHMT2 through irisin-mediated epigenetic modification promotes osteogenesis via promoting DLX3 transcription.

Cell communication and signaling : CCS·2026
Same author

YTHDF1 transcriptionally activated by TCF4 suppresses osteoblast ferroptosis in titanium nanoparticle-induced osteolysis by accelerating GPX4 and SLC7A11 translation.

Journal of nanobiotechnology·2025
Same author

Trends and levels of the global, regional, and national burden of vascular intestinal disorders between 1990 and 2021: Findings from the global burden of disease study 2021.

Medicine·2025

Related Experiment Video

Updated: Feb 22, 2026

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode
10:41

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

9.3K

High efficiency quantum dot light emitting diodes from positive aging.

Krishna P Acharya1, Alexandre Titov, Jake Hyvonen

  • 1NanoPhotonica Inc., 3630 SW 47th Ave. Suite # 100, Gainesville, FL 32608, USA. Krishna.acharya@nanophotonica.net paul.holloway@nanophotonica.net.

Nanoscale
|September 20, 2017
PubMed
Summary

Colloidal quantum dot-polymer hybrid light-emitting diodes (QLEDs) achieve high efficiencies for all primary colors. A novel positive aging effect boosts QLED performance, though further lifetime improvements are needed for commercial applications.

More Related Videos

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

9.5K
In Depth Analyses of LEDs by a Combination of X-ray Computed Tomography CT and Light Microscopy LM Correlated with Scanning Electron Microscopy SEM
10:42

In Depth Analyses of LEDs by a Combination of X-ray Computed Tomography CT and Light Microscopy LM Correlated with Scanning Electron Microscopy SEM

Published on: June 16, 2016

9.8K

Related Experiment Videos

Last Updated: Feb 22, 2026

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode
10:41

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

9.3K
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

9.5K
In Depth Analyses of LEDs by a Combination of X-ray Computed Tomography CT and Light Microscopy LM Correlated with Scanning Electron Microscopy SEM
10:42

In Depth Analyses of LEDs by a Combination of X-ray Computed Tomography CT and Light Microscopy LM Correlated with Scanning Electron Microscopy SEM

Published on: June 16, 2016

9.8K

Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Colloidal quantum dots (CQDs) are promising for next-generation displays and lighting.
  • Achieving high efficiency and long operational lifetimes in CQD-based devices remains a challenge.

Purpose of the Study:

  • To demonstrate high-efficiency colloidal quantum dot-polymer hybrid light-emitting diodes (QLEDs).
  • To investigate the impact of aging effects on QLED performance and lifetime.

Main Methods:

  • Fabrication of hybrid QLEDs using colloidal quantum dots and polymer matrices.
  • Characterization of electroluminescence efficiency and operational stability across primary colors.
  • Analysis of aging phenomena, including positive and negative aging effects.

Main Results:

  • External quantum efficiencies exceeding 12% were achieved for all three primary colors, with green QLEDs reaching 21%.
  • A novel "positive aging" effect was observed, where QLED efficiency increased over time.
  • Red QLEDs demonstrated an operational lifetime of 470 hours at 2550 nits (T90).
  • Negative aging phenomena were identified as a limiting factor for long-term device luminance and lifetime.

Conclusions:

  • High efficiencies for QLEDs across primary colors have been successfully demonstrated.
  • The positive aging effect offers a new avenue for performance enhancement in QLEDs.
  • Further research is required to overcome negative aging and achieve commercially viable lifetimes for television and illumination applications.