Critical role of electrons in the short lifetime of blue OLEDs

Jaewook Kim, Joonghyuk Kim, Yongjun Kim, Youngmok Son, Youngsik Shin, Hye Jin Bae, Ji Whan Kim, Sungho Nam, Yongsik Jung, Hyeonsu Kim, Sungwoo Kang, Yoonsoo Jung, Kyunghoon Lee, Hyeonho Choi () and Woo Youn Kim ()
Additional contact information
Jaewook Kim: Department of Chemistry, KAIST
Joonghyuk Kim: Samsung Electronics Co., Ltd.
Yongjun Kim: Department of Chemistry, KAIST
Youngmok Son: Samsung Electronics Co., Ltd.
Youngsik Shin: Samsung Electronics Co., Ltd.
Hye Jin Bae: Samsung Electronics Co., Ltd.
Ji Whan Kim: Samsung Electronics Co., Ltd.
Sungho Nam: Samsung Electronics Co., Ltd.
Yongsik Jung: Samsung Electronics Co., Ltd.
Hyeonsu Kim: Department of Chemistry, KAIST
Sungwoo Kang: Department of Chemistry, KAIST
Yoonsoo Jung: Department of Chemistry, KAIST
Kyunghoon Lee: Department of Chemistry, KAIST
Hyeonho Choi: Samsung Electronics Co., Ltd.
Woo Youn Kim: Department of Chemistry, KAIST

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Designing robust blue organic light-emitting diodes is a long-standing challenge in the display industry. The highly energetic states of blue emitters cause various degradation paths, leading to collective luminance drops in a competitive manner. However, a key mechanism of the operational degradation of organic light-emitting diodes has yet to be elucidated. Here, we show that electron-induced degradation reactions play a critical role in the short lifetime of blue organic light-emitting diodes. Our control experiments demonstrate that the operational lifetime of a whole device can only be explained when excitons and electrons exist together. We examine the atomistic mechanisms of the electron-induced degradation reactions by analyzing their energetic profiles using computational methods. Mass spectrometric analysis of aged devices further confirm the key mechanisms. These results provide new insight into rational design of robust blue organic light-emitting diodes.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-023-43408-7 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-43408-7

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-023-43408-7

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().