Organic Light-Emitting Diodes Based on Silandiol-Bay-Bridged Perylene Bisimides

被引：12

作者：

Brust, Felix ^{[1
]}

Nagler, Oliver ^{[1
]}

Shoyama, Kazutaka ^{[1
,2
]}

Stolte, Matthias ^{[1
,2
]}

Wuerthner, Frank ^{[1
,2
]}

机构：

[1] Univ Wurzburg, Ctr Nanosyst Chem CNC, Theodor Boveri Weg, D-97074 Wurzburg, Germany

[2] Univ Wurzburg, Inst Organ Chem, D-97074 Wurzburg, Germany

来源：

ADVANCED OPTICAL MATERIALS | 2023年 / 11卷 / 05期

关键词：

organic light emitting diodes; perylene bisimide dyes; rigidification; solid-state emission; vacuum processable; SOLID-STATE FLUORESCENCE; SOLAR CONCENTRATORS; DYE; PERFORMANCE; EMITTERS; LASERS; RED;

D O I：

10.1002/adom.202202676

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Perylene bisimides (PBIs) are among the best fluorophores but have to be enwrapped for optoelectronic applications by large and heavy substituents to prevent their pi-pi-stacking, which is known to accelerate non-radiative decay processes in the solid state. Here, light-weight di-tert-butylsilyl groups are introduced to bridge 1,12-dihydroxy and 1,6,7,12-tetrahydroxy PBIs to afford sublimable dyes for vacuum-processed optoelectronic devices. For both new compounds, this substitution provides a twisted and shielded perylene pi-core whose, via O-Si-O-bridges, rigid structure affords well-resolved absorption and emission spectra with strong fluorescence in solution, as well as in the solid state. The usefulness of these dyes for vacuum-processed optoelectronic devices is demonstrated in organic light-emitting diodes (OLEDs) that show monomer-like emission spectra and high maximum external quantum efficiency (EQE(max)) values of up to 3.1% for the doubly silicon-bridged PBI.

引用

页数：8

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