title: High-resolution electrohydrodynamic jet printing of small-molecule organic light-emitting diodes.
abstract: The development of alternative organic light-emitting diode (OLED) fabrication technologies for high-definition and low-cost displays is an important research topic as conventional fine metal mask-assisted vacuum evaporation has reached its limit to reduce pixel sizes and manufacturing costs. Here, we report an electrohydrodynamic jet (e-jet) printing method to fabricate small-molecule OLED pixels with high resolution (pixel width of 5 μm), which significantly exceeds the resolutions of conventional inkjet or commercial OLED display pixels. In addition, we print small-molecule emitting materials which provide a significant advantage in terms of device efficiency and lifetime compared to those with polymers.
authors.affiliation: School of Materials Science and Engineering, Wearable Electronics Research Group, Low-Dimensional Carbon Materials Research Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea. jangung@unist.ac.kr.
authors.forename: Kukjoo
authors.initials: K
authors.lastname: Kim
authors.forename: Gyeomuk
authors.initials: G
authors.lastname: Kim
authors.forename: Bo Ram
authors.initials: BR
authors.lastname: Lee
authors.forename: Sangyoon
authors.initials: S
authors.lastname: Ji
authors.forename: So-Yun
authors.initials: SY
authors.lastname: Kim
authors.forename: Byeong Wan
authors.initials: BW
authors.lastname: An
authors.forename: Myoung Hoon
authors.initials: MH
authors.lastname: Song
authors.forename: Jang-Ung
authors.initials: JU
authors.lastname: Park