Single-Molecular White-Light Emitters and Their Potential WOLED Applications

Zhao Chen, Cheuk Lam Ho*, Liqi Wang, Wai Yeung Wong*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

198 Citations (Scopus)


White organic light-emitting diodes (WOLEDs) are superior to traditional incandescent light bulbs and compact fluorescent lamps in terms of their merits in ensuring pure white-light emission, low-energy consumption, large-area thin-film fabrication, etc. Unfortunately, WOLEDs based on multilayered or multicomponent (red, green, and blue (RGB)) emissive layers can suffer from some remarkable disadvantages, such as intricate device fabrication and voltage-dependent emission color, etc. Single molecules, which can emit white light, can be used to replace multiple emitters, leading to a simplified fabrication process, stable and reproducible WOLEDs. Recently, the performance of WOLEDs by using single molecules is catching up with that of the state-of-the-art devices fabricated by multicomponent emitters. Therefore, an increasing attention has been paid on single white-light-emitting materials for efficient WOLEDs. In this review, different mechanisms of white-light emission from a single molecule and the performance of single-molecule-based WOLEDs are collected and expounded, hoping to light up the interesting subject on single-molecule white-light-emitting materials, which have great potential as white-light emitters for illumination and lighting applications in the world.

Original languageEnglish
Article number1903269
JournalAdvanced Materials
Issue number11
Early online date3 Feb 2020
Publication statusPublished - 19 Mar 2020

Scopus Subject Areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

User-Defined Keywords

  • electroluminescence
  • organic light-emitting diode
  • photoluminescence
  • single molecule
  • white light


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