Long-lived efficient delayed fluorescence organic light-emitting diodes using n-type hosts

Lin Song Cui, Shi Bin Ruan, Fatima Bencheikh, Ryo Nagata, Lei Zhang, Ko Inada, Hajime Nakanotani, Liang Sheng Liao, Chihaya Adachi

研究成果: ジャーナルへの寄稿学術誌査読

162 被引用数 (Scopus)

抄録

Organic light-emitting diodes have become a mainstream display technology because of their desirable features. Third-generation electroluminescent devices that emit light through a mechanism called thermally activated delayed fluorescence are currently garnering much attention. However, unsatisfactory device stability is still an unresolved issue in this field. Here we demonstrate that electron-transporting n-type hosts, which typically include an acceptor moiety in their chemical structure, have the intrinsic ability to balance the charge fluxes and broaden the recombination zone in delayed fluorescence organic electroluminescent devices, while at the same time preventing the formation of high-energy excitons. The n-type hosts lengthen the lifetimes of green and blue delayed fluorescence devices by > 30 and 1000 times, respectively. Our results indicate that n-type hosts are suitable to realize stable delayed fluorescence organic electroluminescent devices.

本文言語英語
論文番号2250
ジャーナルNature communications
8
1
DOI
出版ステータス出版済み - 12月 1 2017

!!!All Science Journal Classification (ASJC) codes

  • 化学一般
  • 生化学、遺伝学、分子生物学一般
  • 物理学および天文学一般

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