Highly effi cient solution-processed host-free organic light-emitting diodes showing an external quantum effi ciency of nearly 18% with a thermally activated delayed fl uorescence emitter

Yoshimasa Wada, Katsuyuki Shizu, Shosei Kubo, Tatsuya Fukushima, Takuya Miwa, Hiroyuki Tanaka, Chihaya Adachi, Hironori Kaji

研究成果: ジャーナルへの寄稿学術誌査読

30 被引用数 (Scopus)

抄録

We demonstrate solution-processed host-free organic light-emitting diodes (OLEDs) using a thermally activated delayed fluorescence emitter 10-[4-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl]-9,9-dimethylacridan (DMAC-TRZ). A spin-coated neat DMAC-TRZ film shows weak concentration quenching, leading to a high photoluminescence quantum yield (PLQY) of 84%. OLEDs containing a neat film of DMAC-TRZ display a maximum external quantum efficiency (EQE) of 17.6%. Both the PLQY and EQE are the highest reported for solution-processed host-free films and OLEDs, respectively. In addition, the OLEDs exhibit an EQE of 16.8% at high luminance (over 400 cd m%2).

本文言語英語
論文番号032102
ジャーナルApplied Physics Express
9
3
DOI
出版ステータス出版済み - 3月 2016

!!!All Science Journal Classification (ASJC) codes

  • 工学(全般)
  • 物理学および天文学(全般)

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