Heavy-Atom-Free Room-Temperature Phosphorescent Organic Light-Emitting Diodes Enabled by Excited States Engineering

被引：64

作者：

Higginbotham, Heather F. ^{[1
]}

Okazaki, Masato ^{[2
]}

de Silva, Piotr ^{[3
]}

Minakata, Satoshi ^{[2
]}

Takeda, Youhei ^{[2
]}

Data, Przemyslaw ^{[4
,5
,6
]}

机构：

[1] Swinburne Univ Technol, Sch Sci, Hawthorn, Vic 3122, Australia

[2] Osaka Univ, Grad Sch Engn, Dept Appl Chem, Suita, Osaka 5650871, Japan

[3] Tech Univ Denmark, Dept Energy Convers & Storage, DK-2800 Lyngby, Denmark

[4] Silesian Tech Univ, Fac Chem, PL-44100 Gliwice, Poland

[5] Univ Durham, Phys Dept, Durham DH1 3LE, England

[6] Polish Acad Sci, Ctr Polymer & Carbon Mat, PL-41819 Zabrze, Poland

来源：

ACS APPLIED MATERIALS & INTERFACES | 2021年 / 13卷 / 02期

基金：

欧盟地平线“2020”;

关键词：

organic light-emitting diodes; room temperature phosphorescence; thermally activated delayed fluorescence; pi-conjugated compounds; ambipolar compounds; charge-transfer; donor-acceptor systems; ACTIVATED DELAYED FLUORESCENCE; CHARGE-TRANSFER; TADF; EFFICIENCY; EMISSION; DESIGN; POLYMERS;

D O I：

10.1021/acsami.0c17295

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Room temperature phosphorescence materials offer great opportunities for applications in optoelectronics, due to their unique photophysical characteristics. However, heavy-atom-free organic emitters that can realize distinct electrophosphorescence are rarely exploited. Herein a new approach for designing heavy-atom-free organic room temperature phosphorescence emitters for organic light-emitting diodes is presented. The subtle tuning of the singlet and triplet excited states energies by appropriate choice of host matrix allows tailored emission properties and switching of emission channels between thermally activated delayed fluorescence and room temperature phosphorescence. Moreover, an efficient and heavy-atom-free room temperature phosphorescence organic light-emitting diode using the developed emitter is realized.

引用

页码：2899 / 2907

页数：9

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