Triarylboron-Based Fluorescent Organic Light-Emitting Diodes with External Quantum Efficiencies Exceeding 20 %

Katsuaki Suzuki, Shosei Kubo, Katsuyuki Shizu, Tatsuya Fukushima, Atsushi Wakamiya, Yasujiro Murata, Chihaya Adachi, Hironori Kaji

研究成果: Contribution to journalArticle査読

215 被引用数 (Scopus)

抄録

Triarylboron compounds have attracted much attention, and found wide use as functional materials because of their electron-accepting properties arising from the vacant p orbitals on the boron atoms. In this study, we design and synthesize new donor-acceptor triarylboron emitters that show thermally activated delayed fluorescence. These emitters display sky-blue to green emission and high photoluminescence quantum yields of 87-100 % in host matrices. Organic light-emitting diodes using these emitting molecules as dopants exhibit high external quantum efficiencies of 14.0-22.8 %, which originate from efficient up-conversion from triplet to singlet states and subsequent efficient radiative decay from singlet to ground states.

本文言語英語
ページ(範囲)15231-15235
ページ数5
ジャーナルAngewandte Chemie - International Edition
54
50
DOI
出版ステータス出版済み - 12 7 2015

All Science Journal Classification (ASJC) codes

  • 触媒
  • 化学 (全般)

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