| 학회 | 한국공업화학회 |
| 학술대회 | 2014년 가을 (11/12 ~ 11/14, 엑스코(대구)) |
| 권호 | 18권 2호 |
| 발표분야 | (콜로이드계면화학)전자 및 생명공학에서 계면활성 물질의 응용 |
| 제목 | Fabrication of crystalline films by microcontact printing technique with liquid crystalline organic semiconductors and FET applications |
| 초록 | Development of high-performance printed semiconductor devices is highly desired with the expectation for the next generation technologies of “printable electronics” providing simply fabricated, flexible, large-area, low-cost, and environmentally friendly electronic products such as paper-like flexible displays. Here, we fabricated highly ordered organic semiconductor micropatterns of the liquid crystalline small molecule, C10-BTBT, by using a simple method based on template-assisted self-assembly (TASA). The self-alignment properties of the smectic liquid crystal phase of C10-BTBT enable the solvent-free processing of well-defined micropatterns for printed OFETs. The orientation of the liquid crystalline OSC material was directed by using a topographically pre-patterned polymeric template. The nucleation and directional growth of C10-BTBT via TASA was investigated with X-ray diffraction as well as optical and electron microscopy. We then fabricated high-performance organic transistors with a mobility of ~1.7 cm2/V•s based on the highly ordered small molecule micropatterns. We used a polyimide organic dielectric layer in the FETs instead of typical SiO2 gate insulators to realize all-organic FET devices. |
| 저자 | 김윤호, 김아련, 장광석, 김진수, 가재원, 원종찬 |
| 소속 | 한국화학(연) |
| 키워드 | liquid crystal; alignment; patterning; OTFT |
