논문 해외 국제전문학술지(SCI급) "Systematic Investigation of Subtractive Contact Patterning for High-Resolution Organic Electronic Devices
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2023
- 저자명 So-Hyeon Lee†, Hea-Lim Park†, Seung-Hoon Lee, Eun-Kyung Noh, Subin Hwa, Jonghee Lee, Jae-Hyun Lee, and Min-Hoi Kim
- 학술지명 ACS Applied Electronic Materials
- 발행처명 ACS Publication
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 7
홈페이지논문 초록 (Abstract)
We systematically investigated the mechanism of subtractive contact patterning (SCP) and demonstrated high-resolution organic light-emitting diodes (OLEDs) using this SCP process. Owing to the application of the SCP process to various types of organic semiconducting thin films, crystalline thin films (e.g., pentacene) generated patterns via the delamination mechanism and amorphous small molecule thin films (e.g., tris(8-hydroxyquinolinato)aluminum) generated patterns via the diffusion mechanism. In the pattern generation via diffusion, we reported that the higher the processing temperature and the longer the processing time were, the deeper was the pattern depth. In particular, the patterning speed was proportional to the temperature in an exponential function. SCP can be applied to doped small molecule-based thin films and limitedly applied to polymer thin films. Finally, a high-resolution OLED pattern of less than 10 μm wide was fabricated by applying the SCP process without any detrimental effects on the device performance. Furthermore, this SCP process was applied to flexible and curved thin films, which verified its potential use for roll-to-roll processes. This study provides a scientific and technological basis for the fabrication of high-resolution patterns of organic electronic devices such as OLEDs.