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Efficient quantum dot light-emitting diodes by improving charge carrier balance

  • Jeonghun Kwak
  • , Myeongjin Park
  • , Heeyoung Jung
  • , Jaehoon Lim
  • , Wan Ki Bae
  • , Kookheon Char
  • , Seonghoon Lee
  • , Changhee Lee
  • Dong-A University
  • Seoul National University
  • Los Alamos National Laboratory
  • Korea Institute of Science and Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We demonstrate efficient full-color quantum dot (QD) based light-emitting diodes by employing an inverted device structure with zinc oxide (ZnO) electron injection layer. Charge carrier balance is improved by inserting a thin charge blocking layer between the ZnO layer and QD layer, resulting in high efficiency and reduced efficiency roll-off.

Original languageEnglish
Title of host publication21st International Display Workshops 2014, IDW 2014
PublisherSociety for Information Display
Pages1247-1249
Number of pages3
ISBN (Electronic)9781510827790
StatePublished - 2014
Externally publishedYes
Event21st International Display Workshops 2014, IDW 2014 - Niigata, Japan
Duration: 3 Dec 20145 Dec 2014

Publication series

Name21st International Display Workshops 2014, IDW 2014
Volume2

Conference

Conference21st International Display Workshops 2014, IDW 2014
Country/TerritoryJapan
CityNiigata
Period3/12/145/12/14

Keywords

  • Charge balance
  • Inverted structure
  • Light-emitting diodes
  • Quantum dots

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