Stable pure-blue hyperfluorescence oleds

Chin Yiu Chan, Yi Ting Lee, Masaki Tanaka, Yiu Wing Wong, Hajime Nakanotani, Chihaya Adachi

研究成果: ジャーナルへの寄稿会議記事査読

2 被引用数 (Scopus)

抄録

Organic light-emitting diodes (OLEDs) are a promising lightemitting technology useful for various display applications1,2. Despite great progress in this field3-12, there is an ongoing challenge to realize high performance blue OLEDs with efficiency, good color purity, and device lifetime. Here, we report pure-blue (CIEx,y color coordinates of [0.13, 0.16]) OLEDs with high-efficiency (external quantum efficiency of 32 % at 1000 cd m–2), narrow-emission (full-width half maximum of 19 nm), and good stability (LT95 of 18 hours at an initial luminance of 1000 cd m–2). The design is based on a two-unit stacked tandem hyperfluorescence (HF)-OLED with an improved singlet-excited energy transfer process from a sky-blue TADF assistant dopant (AD) (HDT-1) to a pure-blue terminal emitter (TE) (v-DABNA). Further, with sophisticated control of device architectures and materials combination, we report improved OLEDs.

本文言語英語
ページ(範囲)224-227
ページ数4
ジャーナルDigest of Technical Papers - SID International Symposium
52
1
DOI
出版ステータス出版済み - 2021
イベント58th International Symposium on Digest of Technical Papers, ICDT 2021 - Virtual, Online
継続期間: 5月 17 20215月 21 2021

!!!All Science Journal Classification (ASJC) codes

  • 工学一般

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