一种用于OLED的新型以深蓝色发光二极管为主导的热活化延迟荧光激发态设计策略及材料
A Novel Deep Blue LE-Dominated HLCT Excited State Design Strategy and Material for OLED.
作者信息
Tian Xuzhou, Sheng Jiyao, Zhang Shitong, Xiao Shengbing, Gao Ying, Liu Haichao, Yang Bing
机构信息
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
出版信息
Molecules. 2021 Jul 28;26(15):4560. doi: 10.3390/molecules26154560.
Deep blue luminescent materials play a crucial role in the organic light-emitting diodes (OLEDs). In this work, a novel deep blue molecule based on hybridized local and charge-transfer (HLCT) excited state was reported with the emission wavelength of 423 nm. The OLED based on this material achieved high maximum external quantum efficiency (EQE) of 4% with good color purity. The results revealed that the locally-excited (LE)-dominated HLCT excited state had obvious advantages in short wavelength and narrow spectrum emission. What is more, the experimental and theoretical combination was used to describe the excited state characteristic and to understand photophysical property.
深蓝色发光材料在有机发光二极管（OLED）中起着至关重要的作用。在这项工作中，报道了一种基于杂化局域和电荷转移（HLCT）激发态的新型深蓝色分子，其发射波长为423nm。基于这种材料的OLED实现了4%的高最大外量子效率（EQE），且色纯度良好。结果表明，以局域激发（LE）为主的HLCT激发态在短波长和窄光谱发射方面具有明显优势。此外，采用实验与理论相结合的方法来描述激发态特性并理解光物理性质。
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