Suppression of Initial Degradation for High-Efficiency Solution-Processed Organic Light Emitting Diodes

Thi Na Le, Kyu Myung Lee, Yongsup Park, Min Chul Suh

Research output: Contribution to journalConference articlepeer-review

Abstract

In OLED display, the burn-in usually appears when the luminance is reduced by 3% or 5 % (LT97 or LT95). This means that extending the LT95 or LT97 is essential to bring OLED display one step closer to becoming a dominant display technic. Here, we report an improvement in initial stability by designing a double electron transport layer which results in overshooting effect. This effect can suppressed the initial degradation in the device. We successfully increased the LT95 by 7.3 times and LT97 by 8.8 times. Simultaneously, the trade-off between lifetime and efficiency was eliminated as we also obtained very high efficiency of 91.8 cd/A and 26.5% EQE.

Original languageEnglish
Pages (from-to)512-514
Number of pages3
JournalDigest of Technical Papers - SID International Symposium
Volume53
Issue numberS1
DOIs
Publication statusPublished - 2022
EventInternational Conference on Display Technology, ICDT 2022 - Fuzhou, China
Duration: 9 Jul 202212 Jul 2022

Bibliographical note

Publisher Copyright:
© 2022, John Wiley and Sons Inc. All rights reserved.

Keywords

  • High efficiency solution-processed OLED
  • initial degradation
  • lifetime

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