논문 해외 국제전문학술지(SCI급) Guided spreading and drying of 6,13-bis(triisopropylsilylethynyl)-pentacene solution on an inkjet-printed polymer insulator for the field-effect mobility enhancement
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2013
- 저자명 C.-M. Keum, J.-H. Bae, M.-H. Kim, H.-L. Park, J.E. Anthony, and S.-D. Lee
- 학술지명 Applied Physics Letters
- 발행처명 ResearchGate
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 4
홈페이지논문 초록 (Abstract)
We report on the enhancement of the field-effect mobility of solution-processed 6,13-bis(triisopropylsilylethynyl)-pentacene (TIPS-pentacene) by unidirectional topography (UT) of an inkjet-printed polymer insulator. The UT leads to anisotropic spreading and drying of the TIPS-pentacene droplet and enables to spontaneously develop the ordered structures during the solvent evaporation. The mobility of the UT-dictated TIPS-pentacene film (0.202 ± 0.012 cm2/Vs) is found to increase by more than a factor of two compared to that of the isotropic case (0.090 ± 0.032 cm2/Vs). The structural arrangement of the TIPS-pentacene molecules in relation to the mobility enhancement is described within an anisotropic wetting formalism. Our UT-based approach to the mobility enhancement is easily applicable to different classes of soluble organic field-effect transistors by adjusting the geometrical parameters such as the height, the width, and the periodicity of the UT of an inkjet-printed insulator.