Full-Color, Narrowband, and High-Efficiency Electroluminescence from Boron and Carbazole Embedded Polycyclic Heteroaromatics,Journal of the American Chemical Society

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Full-Color, Narrowband, and High-Efficiency Electroluminescence from Boron and Carbazole Embedded Polycyclic Heteroaromatics
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-11-05 , DOI: 10.1021/jacs.0c10081
Minlang Yang _{1,

2} , In Seob Park ₁ , Takuma Yasuda _{1,

2}

Affiliation

Herein, we demonstrate that the strategic implementation of electron-accepting tricoordinate boron and electron-donating carbazole subunits into polycyclic aromatic hydrocarbons (PAHs) produces a family of attractive full-color luminophores that can emit narrowband and efficient thermally activated delayed fluorescence (TADF). A versatile modular design for these boron- and carbazole-embedded PAHs can facilitate the systematic modulation of their photophysical and optoelectronic properties. Organic light-emitting diodes that utilize these PAHs as TADF emitters demonstrate narrowband electroluminescence from blue to red, achieving high maximum external quantum efficiencies of 29.3%, 31.8%, and 22.0% for blue, green, and red, respectively.

中文翻译：

硼和咔唑嵌入的多环杂芳烃的全色、窄带和高效电致发光

在这里，我们证明了将接受电子的三配位硼和给电子咔唑亚基战略性地实施到多环芳烃 (PAH) 中，产生了一系列有吸引力的全色发光体，可以发射窄带和有效的热激活延迟荧光 (TADF)。这些硼和咔唑嵌入的多环芳烃的多功能模块化设计可以促进其光物理和光电特性的系统调节。利用这些多环芳烃作为 TADF 发射器的有机发光二极管表现出从蓝色到红色的窄带电致发光，蓝色、绿色和红色的最大外部量子效率分别为 29.3%、31.8% 和 22.0%。

更新日期：2020-11-05

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