A 9,9 '-bianthracene-cored molecule enjoying twisted intramolecular charge transfer to enhance radiative-excitons generation for highly efficient deep-blue OLEDs

doi:10.1016/j.orgel.2012.12.040

	A 9,9 '-bianthracene-cored molecule enjoying twisted intramolecular charge transfer to enhance radiative-excitons generation for highly efficient deep-blue OLEDs
	Zhang, Peng 1,2; Dou, Wei 1,2; Ju, Zhenghua 1,2; Yang, Lizi 1,2; Tang, Xiaoliang 1,2; Liu, Weisheng 1,2; Wu, Youzhi 3
刊名	ORGANIC ELECTRONICS
	2013-03
卷号	14 期号:3 页码:915-925
关键词	9,9 '-Bianthracene Twisted intramolecular charge transfer Deep-blue OLED Fluorescence
ISSN号	1566-1199
DOI	10.1016/j.orgel.2012.12.040
英文摘要	The efficiency of fluorescent organic light emitting diodes (FOLEDs) is strongly affected by the fraction of singlet excitons formed. However, the standard statistical value of the single to triplet ratio is 1:3, which implies most of the excitons are invalid in fluorescent emitting devices. Here, we demonstrate the ability of twisted intramolecular charge transfer state (TICT-state) to enhance the occurrence of singlet excitons in a fluorescent emitter that is based on the 9,9'-bianthracene (BA) moiety. The anthracene-anthracene (A-A) linked by a single bond and having perpendicular electronic structure is a charge transfer intersystem crossing pi system in excited state. The BA-cored fluorescence emitter (CzBACz) with particular TICT characteristics realizes the electron-hole (e-h) recombination via intramolecular conversion from charge-transfer excitons (immediate precursor) to radiative singlet exciton (final state). For CzBACz-based electroluminescent (EL) device, the singlet generation fraction is more than 25%. (C) 2013 Elsevier B.V. All rights reserved.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000316660200031
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/34741]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China; 2.Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Peoples R China; 3.Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Peng,Dou, Wei,Ju, Zhenghua,et al. A 9,9 '-bianthracene-cored molecule enjoying twisted intramolecular charge transfer to enhance radiative-excitons generation for highly efficient deep-blue OLEDs[J]. ORGANIC ELECTRONICS,2013,14(3):915-925.
APA	Zhang, Peng.,Dou, Wei.,Ju, Zhenghua.,Yang, Lizi.,Tang, Xiaoliang.,...&Wu, Youzhi.(2013).A 9,9 '-bianthracene-cored molecule enjoying twisted intramolecular charge transfer to enhance radiative-excitons generation for highly efficient deep-blue OLEDs.ORGANIC ELECTRONICS,14(3),915-925.
MLA	Zhang, Peng,et al."A 9,9 '-bianthracene-cored molecule enjoying twisted intramolecular charge transfer to enhance radiative-excitons generation for highly efficient deep-blue OLEDs".ORGANIC ELECTRONICS 14.3(2013):915-925.