Professor Yongtaek HONG Develops Key Technology for Large Area Formations of Organic Semiconductors

Professor HONG Yongtaek, Department of Electrical and Computer Engineering
Professor HONG Yongtaek, Department of Electrical and Computer Engineering

A team led by Professors Yongtaek Hong (Department of Electrical and Computer Engineering) and Zhenan BAO (Department of Chemical Engineering, Stanford University) has developed a novel technique which enables large area formations of organic semiconductors (OSCs). Practical applications of organic electronics require patterned and precisely registered OSC films with uniform electrical properties over a large area, which remained a challenge. The team came up with “controlled OSC nucleation and extension for circuits” (CONNECT), which uses differential surface energy and solution shearing to simultaneously generate self-patterned and self-registered OSC film with low variability in electrical properties over a large area. The team succeeded in fabricating transistor density as high as 840 dpi, with a yield of 99%.

Summary by LEE Hee Un, SNU English Editor, gurume0221@snu.ac.kr
Proofread by Melora Brett Briana Johnson, morningcalm2@gmail.com