| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 봄 (04/10 ~ 04/11, 컨벤션 뷰로(대전)) |
| 권호 |
33권 1호 |
| 발표분야 |
유기반도체 재료 및 소자 |
| 제목 |
Room-Temperature Self-Organizing Characteristics of Soluble Acene Field-Effect Transistors |
| 초록 |
We report on the room-temperature self-organizing characteristics of thin films of the organic small-molecule semiconductor triethylsilylethynyl anthradithiophene (TES ADT) and their effects on the electrical properties of TES-ADT-based field-effect transistors (FETs). The morphology of TES-ADT films changed dramatically with time, and the field-effect mobility of FETs based on these films increased by about 100-fold after 7 days as a result of the change of molecular orientation from a tilted structure in the as-prepared film to a well-oriented structure in the final film. Our findings demonstrate that the organic small-molecule semiconductors that exhibit a low crystallinity immediately after spin coating can be changed into highly crystalline structures by spontaneous self-organization of the molecules at room temperature, which results in improved electrical properties of FETs based on these semiconductors. |
| 저자 |
이위형, 임정아, 장윤석, 조길원
|
| 소속 |
포항공과대 |
| 키워드 |
soluble acene; organic field-effect transistors; molecular orientation
|
| E-Mail |
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