Light manipulation for organic light-emitting diodes

Qing Dong Ou, Lei Zhou, Yan Qing Li, Jian Xin Tang

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

1 Citation (Scopus)

Abstract

To realize high-efficiency organic light-emitting diodes (OLEDs), it is essential to boost out-coupling efficiency. Here we review our latest reports upon light manipulation for OLEDs by integrating a dual-side bio-inspired deterministic quasi-periodic moth's eye nanostructure with broadband anti-reflective and quasi-omnidirectional properties. Light out-coupling efficiency of OLEDs with stacked triple emission units is over 2 times that of a conventional device, resulting in drastic increase in external quantum efficiency and current efficiency to 119.7% and 366 cd A-1 without introducing spectral distortion and directionality. Theoretical calculations furthermore clarify that the improved device performance is primarily attributed to the effective extraction of the waveguide and surface plasmonic modes of the confined light over all the emission wavelengths and viewing-angles.

Original languageEnglish
Title of host publicationOptoelectronic Devices and Integration V
EditorsHai Ming, Xuping Zhang, Changyuan Yu
PublisherSPIE - International Society for Optical Engineering
ISBN (Electronic)9781628413434
DOIs
Publication statusPublished - 2014
Externally publishedYes
EventOptoelectronic Devices and Integration V - Beijing, China
Duration: 9 Oct 201411 Oct 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9270
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptoelectronic Devices and Integration V
CountryChina
CityBeijing
Period9/10/1411/10/14

Keywords

  • light out-coupling
  • nanophotonics and plasmonics
  • Organic light-emitting diode (OLED)
  • tandem

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