Indolo[3,2,1-jk]carbazole based planarized CBP derivatives as host materials for PhOLEDs with low efficiency roll-off

被引：45

作者：

Kautny, Paul ^{[1
]}

Wu, Zhongbin ^{[2
]}

Eichelter, Johanna ^{[1
]}

Horkel, Ernst ^{[1
]}

Stoeger, Berthold ^{[3
]}

Chen, Jiangshan ^{[2
]}

Ma, Dongge ^{[2
]}

Froehlich, Johannes ^{[1
]}

Lumpi, Daniel ^{[1
]}

机构：

[1] Vienna Univ Technol, Inst Appl Synthet Chem, Getreidemarkt 9-163, A-1060 Vienna, Austria

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

[3] Vienna Univ Technol, Inst Chem Technol & Analyt, Getreidemarkt 9-164, A-1060 Vienna, Austria

来源：

ORGANIC ELECTRONICS | 2016年 / 34卷

关键词：

Blue PhOLED; High triplet energy; Low efficiency roll-off; Planarized CPB derivatives; Structure property relationship; LIGHT-EMITTING-DIODES; ENERGY-TRANSFER; ORGANIC ELECTROPHOSPHORESCENCE; PHOSPHORESCENT MOLECULES; TRIPLET ENERGIES; SINGLET; EMISSION; DEVICES; MECHANISM; SERIES;

D O I：

10.1016/j.orgel.2016.04.036

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three novel planarized CPB derivatives (ICzCz, ICzPCz, ICzICz) have been synthesized and characterized concerning applications as host materials for PhOLEDs. The incorporation of fully planar indolo[3,2,1-jk] carbazole (ICz) in the CBP scaffold has been systematically investigated, revealing a significant impact on molecular properties, such as improved thermal stability (t(g) > 110 degrees C), high triplet energies (E-T > 2.81 eV) and charge transport properties. Employing the newly developed materials as host materials, efficient green PhOLEDs (CEmax: 60.1 cd A(-1), PEmax: 42.1 lm W-1, EQE(max): 15.9%) with a remarkably low efficiency roll-off of 5% at 1000 cd m(-2) as well as blue PhOLEDs (ICzCz) with a high PE of 26.1 lm W-1 have been realized. Hence, the first comprehensive report on the application of ICz as integral building block for electroluminescent materials is presented, establishing this particular structural motive as versatile structural motive in this field. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：245 / 253

页数：9

共 53 条

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