Professor of Chemical Engineering
NEW MATERIALS FOR FLEXIBLE OLED
For flexible organic light emitting diodes (OLEDs), new materials such as a flexible transparent conducting electrode and flexible moisture barrier substrate are indispensable. In our laboratory, a new planarized metal-grid transparent electrode film has been developed and utilized for the fabrication of the flexible OLED instead of utilizing the conventional indium tin oxide (ITO) electrode. In addition, for the flexible moisture barrier substrates, multi-layered aluminum oxide and polymer substrates which can be fabricated by full wet processes have been developed and utilized as the flexible substrates for flexible OLEDs. To take the full advantages of flexible organic electronics, the new materials are targeted to be possible by the low-cost and short tact-time processes. These new materials can be applied for the flexible active matrix OLED displays, the flexible OLED lightings, and the flexible organic photovoltaic (OPV) devices.
NEW MANUFACTURING PROCESSES FOR FLEXIBLE OLED AND FLEXIBLE OPV
This research aims to fabricate the flexible OLEDs cheaper and easier than the conventional fabrication processes can. The researches include the solution-based deposition of active organic layers, thin film encapsulation processes, and the fabrication of high-efficiency OLED devices. For these researches, besides the conventional vacuum deposition processes for fabricating OLEDs, the unit deposition processes such as the atomic layer deposition (ALD), the molecular layer deposition(MLD), the plasma-enhanced chemical vapor deposition (PECVD), the ultrasonic mist deposition (UMD), and the wet printing processes are utilized. For the wet printing processes, the gravure printing and screen printing methods are utilized for the fabrication of flexible OLEDs. We also study a few novel deposition processes to fabricate flexible OLEDs by utilizing the vapor phase polymerization. All the above fabrication processes can be applied for the fabrication of flexible OPV devices.
1.S-W Seo, S.M.Cho, Materials Letters, 134, 142-145 (2014)
2.Kyu-hyun Hwang, S.M.Cho, The Korean Journal of Chemical Engineering, 31, 528-531 (2014)
3.S-W Seo, S.M.Cho, Thin Solid Films, 550 (1), 742-748 (2013)
4.S-W Seo, S.M.Cho, Journal of Applied Physics, 114 (14), 143505 (2013)
5.S-W Seo, S.M.Cho, World Scientific Journal, 8 (4), 135041-6 (2013)
정교수 (성균관대학교, 2002 – 현재)
총무 (한국화학공학회, 2006 – 2007)
이사 (한국화학공학회, 2010 – 2011)
부학장 (성균관대학교 공과대학, 2011 – 2012)
부문위원장 (한국화학공학회, 2014 – 2016)