논문 해외 국제전문학술지(SCI급) Structural characteristics of thermally advanced polymer with intrinsic microporosity for application as flexible OLED substrate
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2023
- 저자명 Ye-Seul Lee, Akeem Raji, Eun-Kyung Noh, Ji-Hyeon Yoon, Baeksang Sung, Akpeko Gasonoo, Jonghee Lee, Min-Hoi Kim, Yoonseuk Choi, Yuji Shibasaki, and Jae-Hyun Lee
- 학술지명 J. Infomat. Disp
- 발행처명 ResearchGate
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 4
홈페이지논문 초록 (Abstract)
The chemical and structural characteristics of solution-processed polymer with intrinsic microporosity (PIM) based on 9, 9-bis (4-hydroxyphenyl) fluorene (BHPF) film is investigated. A fully flexible and transparent PIM film exhibiting uniform and high transmittance of more than 90% within the visible light range is demonstrated. The stability of the PIM film is further demonstrated with relatively stable coefficient of thermal expansion (CTE) characteristics. Additionally, the film has high heat resistance that can withstand high-temperature processes at 250 °C. The PIM film exhibits a remarkably high glass transition temperature (Tg) of 294.7 °C, indicating the thermal stability of the film at elevated temperatures. The PIM film also exhibits relatively high surface energy, low surface roughness (Rq), and peak-to-valley values of 0.45 and 4.4 nm, respectively. This surface morphology confirms the PIM film’s superior characteristic in preventing short circuits or leakage in current paths in an organic electronic device. Finally, the PIM film is successfully tested as a substrate for a bottom-emitting organic light-emitting diode (OLED). The investigation has proven PIM film to be a good candidate to be adopted as a substrate in fabricating advanced organic electronic devices and next-generation displays.