Bright, efficient, and stable pure-green hyperfluorescent organic light-emitting diodes by judicious molecular design

Yi-Ting Lee, Chin-Yiu Chan (), Nanami Matsuno, Shigetada Uemura, Susumu Oda, Masakazu Kondo, Rangani Wathsala Weerasinghe, Yanmei Hu, Gerardus N. Iswara Lestanto, Youichi Tsuchiya, Yufang Li, Takuji Hatakeyama () and Chihaya Adachi ()
Additional contact information
Yi-Ting Lee: Kyushu University, Motooka
Chin-Yiu Chan: City University of Hong Kong, Tat Chee Avenue
Nanami Matsuno: Kyoto University
Shigetada Uemura: Kyoto University
Susumu Oda: Toyo University
Masakazu Kondo: Ltd. 5-1 Goikaigan
Rangani Wathsala Weerasinghe: Kyushu University, Motooka
Yanmei Hu: Kyushu University, Motooka
Gerardus N. Iswara Lestanto: Kyushu University, Motooka
Youichi Tsuchiya: Kyushu University, Motooka
Yufang Li: City University of Hong Kong, Tat Chee Avenue
Takuji Hatakeyama: Kyoto University
Chihaya Adachi: Kyushu University, Motooka

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract To fulfill ultra-high-definition display, efficient and bright green organic light-emitting diodes with Commission Internationale de l’Éclairage y-coordinate ≥ 0.7 are required. Although there are some preceding reports of highly efficient devices based on pure-green multi-resonance emitters, the efficiency rolloff and device stabilities for those pure-green devices are still unsatisfactory. Herein, we report the rational design of two pure-green multi-resonance emitters for achieving highly stable and efficient pure-green devices with CIEx,ys that are close to the NTSC and BT. 2020 standards. In this study, our thermally activated delayed fluorescence OLEDs based on two pure-green multi-resonance emitters result in CIEy up to 0.74. In hyperfluorescent device architecture, the CIExs further meet the x-coordinate requirements, i.e., NTSC (0.21) and BT. 2020 (0.17), while keeping their CIEys ~ 0.7. Most importantly, hyperfluorescent devices display the high maximum external quantum efficiencies of over 25% and maximum luminance of over 105 cd m−2 with suppressed rolloffs (external quantum efficiency of ~20% at 104 cd m−2) and long device stabilities with LT95s of ~ 600 h.

Date: 2024
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-47482-3 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:15:y:2024:i:1:d:10.1038_s41467-024-47482-3

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

DOI: 10.1038/s41467-024-47482-3

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 ().