Aggregation-induced delayed fluorescence from phenothiazine-containing donor-acceptor molecules for high-efficiency non-doped organic light-emitting diodes

被引：60

作者：

Aizawa, Naoya ^{[1
]}

Tsou, Chao-Jen ^{[1
,2
]}

Park, In Seob ^{[1
,3
]}

Yasuda, Takuma ^{[1
,2
,3
]}

机构：

[1] Kyushu Univ, INAMORI Frontier Res Ctr IFRC, Fukuoka, Japan

[2] Kyushu Univ, Grad Sch Integrated Frontier Sci, Dept Automot Sci, Fukuoka, Japan

[3] Kyushu Univ, Grad Sch Engn, Dept Appl Chem, Fukuoka, Japan

来源：

POLYMER JOURNAL | 2017年 / 49卷 / 01期

基金：

日本学术振兴会;

关键词：

INDUCED EMISSION; PHOTOPHYSICAL PROPERTIES; ENHANCED EMISSION; O-CARBORANE; PURE; PHOTOLUMINESCENCE; LUMINOGENS; MOIETIES; RED;

D O I：

10.1038/pj.2016.82

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Highly luminescent donor-acceptor molecules based on a phenothiazine donor unit coupled with a xanthone or benzophenone acceptor unit were developed for use in organic light-emitting diodes (OLEDs). While both molecules are almost non-luminescent in pure tetrahydrofuran (THF) solution, a strong yellow delayed fluorescence was observed upon their aggregation in THF/water mixtures or in neat films. This result demonstrates the unique aggregation-induced delayed fluorescence (AIDF) characteristics of these molecules. OLEDs using these AIDF materials as a non-doped emission layer achieved high external electroluminescence quantum efficiencies of up to 11%, which exceeds the theoretical maximum for conventional fluorescent OLEDs.

引用

页码：197 / 202

页数：6

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