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

Photoluminescence: Fluorescence and Phosphorescence01:23

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
Photoluminescence: Applications01:14

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...

You might also read

Related Articles

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

Sort by
Same author

Regression-based clustered CpG methylome profiling reveals divergent epigenetic trajectories in paired primary and recurrent hepatocellular carcinoma.

Cancer genetics·2026
Same author

Assessment of human exposure to terpenes from fragrant plants in homes using passive sampling.

Scientific reports·2026
Same author

Defining subcellular synovial responses in TMJ osteoarthritis onset via mechanical stress and articular disk derangement models.

International journal of oral science·2026
Same author

In silico exploration of osteoclast precursor inhibition for preventing rapid bone loss after denosumab discontinuation.

NPJ systems biology and applications·2026
Same author

Cell density-dependent nuclear-cytoplasmic shuttling of SETDB1 integrates with Hippo signaling to regulate YAP1-mediated transcription.

FEBS letters·2026
Same author

Seasonally adaptive data-driven ozone prediction in megacity environments.

Environmental research·2026

Related Experiment Video

Updated: May 30, 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

High efficiency phosphorescent blue organic light-emitting diodes using double emitting layer.

Jung Sun Park1, Ji Hoon Seo, Ja Ryong Koo

  • 1Department of Information Display, Hongik University, Seoul 121-791, Korea.

Journal of Nanoscience and Nanotechnology
|July 26, 2011
PubMed
Summary

Highly efficient blue phosphorescent organic light-emitting diodes (PHOLEDs) were achieved using a novel double emitting layer (D-EML) structure. This design broadens exciton formation and confinement, enhancing device performance for brighter, more efficient blue light emission.

More Related Videos

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
08:51

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

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

Related Experiment Videos

Last Updated: May 30, 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

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
08:51

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

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

Area of Science:

  • Materials Science
  • Organic Electronics
  • Photophysics

Background:

  • Phosphorescent organic light-emitting diodes (PHOLEDs) are crucial for energy-efficient displays and lighting.
  • Achieving high efficiency and stable blue emission in PHOLEDs remains a significant challenge.
  • Existing emitter systems often suffer from limited operational stability and efficiency.

Purpose of the Study:

  • To develop highly efficient blue phosphorescent organic light-emitting diodes (PHOLEDs).
  • To investigate the impact of a double emitting layer (D-EML) structure on device performance.
  • To optimize the D-EML composition and thickness for enhanced blue emission.

Main Methods:

  • Fabrication of blue PHOLEDs utilizing an iridium(111) bis[(4,6-di-fluoropheny)-pyridinato-N,C2] picolinate emitter.
  • Implementation of a double emitting layer (D-EML) comprising N,N-dicarbazolyl-3,5-benzene (mCP) and p-bis(triphenylsilyly)benzene (UGH2).
  • Characterization of device performance, including external quantum efficiency, power efficiency, luminous efficiency, and Commission Internationale de l'Eclairage (CIE) coordinates.

Main Results:

  • Optimized blue PHOLEDs with a 200/100 Å mCP/UGH2 D-EML achieved a peak external quantum efficiency of 11.44%.
  • The devices demonstrated excellent power efficiency (16.8 lm/W) and luminous efficiency (23.14 cd/A).
  • Achieved Commission Internationale de l'Eclairage (CIE) coordinates of (0.17, 0.33) indicate high-quality blue emission.

Conclusions:

  • The D-EML strategy effectively broadens the exciton formation zone and confines excitons, leading to improved PHOLED performance.
  • The developed blue PHOLEDs exhibit state-of-the-art efficiency and color purity.
  • This work presents a promising approach for realizing efficient and stable blue organic light-emitting diodes.