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

文献类型：期刊论文

作者Liu, Rui1,2; Liu, Yu1,3; Zhang, Dingdong1,2; Du, Jinhong1,2; Han, Xu1; Yuan, Shuangdeng1,2; Ren, Wencai1,2
刊名INFOMAT
出版日期2024-11-27
页码12
关键词graphene organic light-emitting diodes passivation polyimide transparent electrodes
DOI10.1002/inf2.12638
通讯作者Du, Jinhong(jhdu@imr.ac.cn) ; Ren, Wencai(wcren@imr.ac.cn)
英文摘要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
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
语种英语
WOS记录号WOS:001363727000001
出版者WILEY
资助机构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
源URL  
专题金属研究所_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.

入库方式： OAI收割

来源：金属研究所

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