Design of ortho-Substituted Donor-Acceptor Molecules as Highly Efficient Green Thermally Activated Delayed Fluorescent Emitters

被引：1

作者：

Cha, Jae-Ryung ^{[1
,2
]}

Gong, Myoung-Seon ^{[1
,2
]}

Lee, Tak Jae ^{[3
]}

Ha, Tae Hoon ^{[3
]}

Lee, Chil Won ^{[3
]}

机构：

[1] Dankook Univ, Dept Nanobiomed Sci, Cheonan 31116, South Korea

[2] Dankook Univ, PLUS NBM Global Res Ctr BK21, Cheonan 31116, South Korea

[3] Dankook Univ, Dept Chem, Cheonan 31116, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2018年 / 72卷 / 08期

关键词：

OLED; Fluorescence; TADF; Green emitter; High efficiency; LIGHT-EMITTING-DIODES; ELECTROLUMINESCENCE; EMISSION;

D O I：

10.3938/jkps.72.873

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ortho-substituted donor-acceptor molecules 2-(4,6-diphenyl-1, 3, 5-triazin-2-yl)-N,N-diphenylaniline (DPA-o-Trz) and 2-(4,6-diphenyl-1, 3, 5-triazine-2-yl)-N,N-di-p-tolylaniline (MPA-o-Trz) were designed, synthesized, and found to exhibit green fluorescence characteristics. Notably, the singlet-triplet energy gap was less than 0.1 eV, indicating that reverse intersystem crossing gave rise to thermally activated delayed fluorescence (TADF). The organic light-emitting device performance of MPA-o-Trz showed a high external quantum efficiency of 16.3% and good color stability from 0.1 cd/m(2) to 5000 cd/m(2).

引用

页码：873 / 879

页数：7

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