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Related Experiment Video

Updated: Mar 29, 2026

Step-by-Step Guide for Harnessing Organic Light Emitting Diodes by Solution Processed Device Fabrication of a TADF Emitter
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Step-by-Step Guide for Harnessing Organic Light Emitting Diodes by Solution Processed Device Fabrication of a TADF Emitter

Published on: November 7, 2025

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Afterglow Organic Light-Emitting Diode.

Ryota Kabe1, Naoto Notsuka1, Kou Yoshida1

  • 1JST, ERATO, Adachi Molecular Exciton Engineering Project, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.

Advanced Materials (Deerfield Beach, Fla.)
|November 25, 2015
PubMed
Summary
This summary is machine-generated.

An afterglow organic light-emitting diode (OLED) was developed, showing long-lasting light emission after being turned off. This device achieves dual blue and green light emission through fluorescence and phosphorescence, with a notable 4.3-second phosphorescence lifetime.

Keywords:
electroluminescenceintermolecular interactionslight-emitting diodesnonradiative decayphosphorescence

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Photophysics

Background:

  • Organic light-emitting diodes (OLEDs) are crucial for displays and lighting.
  • Achieving long afterglow in OLEDs is challenging but desirable for specific applications.
  • Dual emission mechanisms can enhance color purity and device performance.

Purpose of the Study:

  • To demonstrate an afterglow organic light-emitting diode (OLED) with extended transient decay.
  • To achieve dual emission from fluorescence and phosphorescence in a single OLED device.
  • To characterize the phosphorescence lifetime of the developed afterglow OLED.

Main Methods:

  • Fabrication of an organic light-emitting diode structure.
  • Utilizing materials capable of both fluorescence and phosphorescence.
  • Measurement of electroluminescence decay characteristics and phosphorescence lifetime.

Main Results:

  • Successful demonstration of an afterglow OLED with electroluminescence persisting after power-off.
  • Observation of dual emission: blue light via fluorescence and green light via phosphorescence.
  • Achieved a significant phosphorescence lifetime of 4.3 seconds.

Conclusions:

  • The developed afterglow OLED successfully exhibits prolonged light emission.
  • The device integrates both fluorescent and phosphorescent emitters for dual-color output.
  • The long phosphorescence lifetime indicates potential for applications requiring sustained light emission.