气候变化领域集成服务门户(CCPortal): Exceptionally efficient deep blue anthracene-based luminogens: design, synthesis, photophysical, and electroluminescent mechanisms

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DOI	10.1016/j.scib.2021.06.018
	Exceptionally efficient deep blue anthracene-based luminogens: design, synthesis, photophysical, and electroluminescent mechanisms
	Guo R.; Liu W.; Ying S.; Xu Y.; Wen Y.; Wang Y.; Hu D.; Qiao X.; Yang B.; Ma D.; Wang L.
发表日期	2021
ISSN	20959273
英文摘要	Achieving high-efficiency deep blue emitter with CIEy < 0.06 (CIE, Commission Internationale de L'Eclairage) and external quantum efficiency (EQE) >10% has been a long-standing challenge for traditional fluorescent materials in organic light-emitting diodes (OLEDs). Here, we report the rational design and synthesis of two new deep blue luminogens: 4-(10-(4′-(9H-carbazol-9-yl)-2,5-dimethyl-[1,1′-biphenyl]-4-yl)anthracen-9-yl)benzonitrile (2M-ph-pCzAnBzt) and 4-(10-(4-(9H-carbazol-9-yl)-2,5-dimethylphenyl)anthracen-9-yl)benzonitrile (2M-pCzAnBzt). In particular, 2M-ph-pCzAnBzt produces saturated deep blue emissions in a non-doped electroluminescent device with an exceptionally high EQE of 10.44% and CIEx,y (0.151, 0.057). The unprecedented electroluminescent efficiency is attributed to the combined effects of higher-order reversed intersystem crossing and triplet-triplet up-conversion, which are supported by analysis of theoretical calculation, triplet sensitization experiments, as well as nanosecond transient absorption spectroscopy. This research offers a new approach to resolve the shortage of high efficiency deep blue fluorescent emitters. © 2021 Science China Press
关键词	Anthracene derivative Deep blue luminogen Hot excitons Non-doped device Triplet-triplet annihilation up-conversion
英文关键词	Absorption spectroscopy; Efficiency; Electroluminescence; Fluorescence; Organic light emitting diodes (OLED); Supercomputers; Anthracene derivatives; Benzonitriles; Carbazol; Deep blue; Deep blue luminogen; External quantum efficiency; Higher efficiency; Hot exciton; Non-doped devices; Triplet-triplet annihilation up-conversion; Anthracene
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207413
作者单位	Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China; State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, 510640, China; State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, China
推荐引用方式 GB/T 7714	Guo R.,Liu W.,Ying S.,et al. Exceptionally efficient deep blue anthracene-based luminogens: design, synthesis, photophysical, and electroluminescent mechanisms[J],2021.
APA	Guo R..,Liu W..,Ying S..,Xu Y..,Wen Y..,...&Wang L..(2021).Exceptionally efficient deep blue anthracene-based luminogens: design, synthesis, photophysical, and electroluminescent mechanisms.Science Bulletin.
MLA	Guo R.,et al."Exceptionally efficient deep blue anthracene-based luminogens: design, synthesis, photophysical, and electroluminescent mechanisms".Science Bulletin (2021).