NDLI: Benzene-cored AIEgens for deep-blue OLEDs: high performance without hole-transporting layers, and unexpected excellent host for orange emission as a side-effect

Content Provider	Royal Society of Chemistry (RSC)
Author	Li, Zhen Wu, Zhongbin Peng, Qian Ma, Dongge Zhan, Xuejun Lin, Yuxuan Li, Qianqian Xie, Yujun
Copyright Year	2016
Abstract	Great efforts have been devoted to explore efficient fluorescent materials, especially deep-blue luminogens, for organic light emitting diodes (OLEDs). In this paper, according to the design idea of creating luminogens with the characteristic of aggregation induced emission (AIE), four new benzene-cored luminogens with very simple structure have been intelligently designed, in which, without an additional hole-transporting layer (such as NPB), 3TPA-CN exhibited deep-blue emission and high performance in a simple nondoped LED device with a current efficiency (CE) of 5.21 cd A−1, external quantum efficiency (EQE) of 3.89%, and CIE coordinates of (0.15, 0.14). Excitingly, as a wonderful side-effect, 3TPA-CN can serve as an excellent host for orange emissive phosphorescent OLEDs (PhOLEDs), with a maximum current and power efficiency of 57.4 cd A−1 and 52.0 lm W−1, respectively, and a corresponding maximum EQE of 18.2%, higher than that of CBP (15.7%), one popular host for orange PhOLEDs, under the same conditions, thus broadening the utilization of AIEgens as host in PhOLEDs.
Starting Page	4355
Ending Page	4363
Page Count	9
File Format	HTM / HTML PDF
ISSN	20416520
Volume Number	7
Issue Number	7
Journal	Chemical Science
DOI	10.1039/c6sc00559d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	CIE 1931 color space EQE Quantum tunnelling
Content Type	Text
Resource Type	Article
Subject	Chemistry

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