| 초록 |
Printed electronics consist of forming electrically functional patterns or devices in the micrometer scale by utilizing conventional printing methods on flexible or rugged substrates. This technology is expected to make the prices affordable, since low-cost and high-throughput printing for graphic arts such as flexography, gravure, screen and offset printing is used as the main fabrication method. Among these printing methods, inkjet-printing is the most cost effective printing method because they can selectively ‘drop’ the only small amount inks onto specific locations to pattern the ink. In this talk, I will introduce Samsung’s approaches on polymer field-effect transistors (PFETs) fabricated by inkjet-printing process. With these approaches, the inkjet-printed PFETs can have very high performance in terms of mobility (~ 1 cm2/Vs) and On/off ratios (＞ 10^7). Also, I will explain how the inkjet-printed PFETs can achieve such a decent performance by improving (i) materials, (ii) device structure, and (iii) process optimization. |
