Enhanced flexibility and stability of PEDOT:PSS electrodes through interfacial crosslinking for flexible organic light-emitting diodes |
| |
| Institution: | 1. Institute of Optoelectronic Display, National & Local United Engineering Lab of Flat Panel Display Technology, Fuzhou University, Fuzhou, 350002, China;2. School of Mechanical Engineering & Automation, Fuzhou University, Fuzhou, 35018, China;3. College of Information Science and Engineering, Fujian University of Technology, Fuzhou, 350108, China;1. Department of Display Engineering, Pukyong National University, Busan, 608-737, Republic of Korea;2. OLED Research Center, Electronics and Telecommunications Research Institute (ETRI), Daejeon, 305-700, Republic of Korea;3. Department of Materials Science and Engineering, Yonsei University, Seoul, 120-749, Republic of Korea;4. Center for Nano-Photonics Convergence Technology, Korea Institute of Industrial Technology, Gwangju, 500-480, Republic of Korea;1. Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Republic of Korea;2. Department of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 156-756, Republic of Korea;1. Department of Electrical Energy Engineering, Keimyung University, Daegu 42601, South Korea;2. Department of Electronics Engineering, Sookmyung Women’s University, Seoul 04312, South Korea;3. Center for Nano-Photonics Convergence Technology, Korea Institute of Industrial Technology, Gwangju 61012, South Korea;4. School of Electronics Engineering, Chungbuk National University, Cheongju 28644, South Korea |
| |
| Abstract: | Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films have drawn extensive attention as one of the most promising flexible transparent conductive electrodes to replace traditional indium tin oxide. However, some critical issues, such as weak adhesion, vulnerability to moisture and detrimental acidic property, need to be addressed before the practical application and industrialization. Here, we propose a facile and effective strategy of interfacial crosslinking to further improve the flexibility and stability of PEDOT:PSS electrodes with high transparency and conductivity by introducing polyethyleneimine ethoxylated (PEIE) on the surface. The flexibility and stability of PEDOT:PSS electrodes with PEIE overcoating layer are significantly improved, which can be attributed to the interfacial crosslinking reaction between PEIE and PSS. Finally, flexible organic light-emitting didoes (OLEDs) are constructed based on the PEDOT:PSS electrodes modified by PEIE, and current efficiency is enhanced from 20.5 to 76.4 cd/A with a 2.7-fold enhancement, owning to the improved carrier balance. This study confirms that PEIE is effective in protecting the PEDOT:PSS films from mechanical damage and moisture attack, while maintaining the high conductive and transmittance, and illustrates a promising future in low-cost flexible optoelectronic devices employing PEDOT:PSS electrodes. |
| |
| Keywords: | Flexible transparent electrodes PEDOT:PSS Ethoxylated polyethyleneimine Mechanical reliability Chemical stability Optoelectronic devices |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
