Polyimide passivation-enabled high-work function graphene transparent electrode for organic light-emitting diodes with enhanced reliability

doi:10.1002/inf2.12638

IMR OpenIR

	Polyimide passivation-enabled high-work function graphene transparent electrode for organic light-emitting diodes with enhanced reliability
	Liu, Rui 1,2; Liu, Yu 1,3; Zhang, Dingdong 1,2; Du, Jinhong 1,2; Han, Xu 1; Yuan, Shuangdeng 1,2; Ren, Wencai 1,2
通讯作者	Du, Jinhong(jhdu@imr.ac.cn) ; Ren, Wencai(wcren@imr.ac.cn)
	2024-11-27
发表期刊	INFOMAT
页码	12
摘要	Chemical vapor deposition (CVD)-gown graphene has tremendous potential as a transparent electrode for the next generation of flexible optoelectronics such as organic light-emitting diodes (OLEDs). A semiconductor coating is critical to improve the work function but usually makes graphene rougher and more conductive, which increases leakage, and then significantly restrict device efficiency improvement and worsens reliability. Here an insulating polyimide bearing carbazole-substituted triphenylamine units and bis(trifluoromethyl)phenyl groups (CzTPA PI/2CF3) with high thermal stability is synthesized to passivate graphene. The similar surface free energy allows the uniform coating of CzTPA PI/2CF3/N-methylpyrrolidone on graphene. Despite of a slight decrease in conductivity, CzTPA PI/2CF3 passivation enables a substantial reduction in surface roughness and improvement in work function. By using such CzTPA PI/2CF3-passivated graphene as anode, a flexible green OLED is demonstrated with a maximum current, power, and external quantum efficiencies of 88.4 cd A-1, 115.7 lm W-1, and 24.8%, respectively, which are among the best of the reported results. Moreover, the CzTPA PI/2CF3 passivation enhances the device reliability with extending half-life and reducing dispersion coefficient of efficiency. The study promotes the practical use of graphene transparent electrodes for flexible optoelectronics.image
关键词	graphene organic light-emitting diodes passivation polyimide transparent electrodes
资助者	Ministry of Science and Technology of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Postdoctoral Science Foundation of China ; Special Projects of the Central Government in Guidance of Local Science and Technology Development ; IMR Innovation Fund ; Guangdong Basic and Applied Basic Research Foundation
DOI	10.1002/inf2.12638
收录类别	SCI
语种	英语
资助项目	Ministry of Science and Technology of China ; National Science Foundation of China[52172057] ; National Science Foundation of China[52188101] ; National Science Foundation of China[52002375] ; Chinese Academy of Sciences[ZDBS-LY-JSC027] ; Chinese Academy of Sciences[XDB30000000] ; Postdoctoral Science Foundation of China[2020TQ0328] ; Postdoctoral Science Foundation of China[2023M743569] ; Special Projects of the Central Government in Guidance of Local Science and Technology Development[2024010859-JH6/1006] ; IMR Innovation Fund[2023-PY17] ; Guangdong Basic and Applied Basic Research Foundation[2020B0301030002] ; [2021YFA1200804]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001363727000001
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191851
专题	中国科学院金属研究所
通讯作者	Du, Jinhong; Ren, Wencai
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.Shenyang Univ Chem Technol, Coll Sci, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Liu, Rui,Liu, Yu,Zhang, Dingdong,et al. Polyimide passivation-enabled high-work function graphene transparent electrode for organic light-emitting diodes with enhanced reliability[J]. INFOMAT,2024:12.
APA	Liu, Rui.,Liu, Yu.,Zhang, Dingdong.,Du, Jinhong.,Han, Xu.,...&Ren, Wencai.(2024).Polyimide passivation-enabled high-work function graphene transparent electrode for organic light-emitting diodes with enhanced reliability.INFOMAT,12.
MLA	Liu, Rui,et al."Polyimide passivation-enabled high-work function graphene transparent electrode for organic light-emitting diodes with enhanced reliability".INFOMAT (2024):12.