논문 해외 국제전문학술지(SCI급) Effect of thermo-gradient assisted solvent evaporation on enhancement of electrical properties of 6,13-bis(triisopropylsilylethynyl)-pentacene thin-film transistors
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2011
- 저자명 C.-M. Keum, J.-H. Bae, W.-H. Kim, M.-H. Kim, and S.-D. Lee
- 학술지명 ", Journal of the Korean Physical Society,
- 발행처명 ScienceDirect
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 6
홈페이지논문 초록 (Abstract)
We propose a viable method of inducing the self-alignment of 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene) molecules using magnetic nanoparticles under a controlled magnetic field. An essential feature of the self-alignment of TIPS-pentacene containing magnetic nanoparticles is systematically studied through meticulous understanding of gradient solvent evaporation in a magnetic nanoparticle-dispersed droplet guided by a static magnetic field. It is found that such TIPS-pentacene molecules are spontaneously aligned by magnetic flux-affected nanoparticle motion with the generation of gradual anisotropic solvent evaporation. In particular, by controlling the effective magnetic force applied to a magnetic nanoparticle-containing TIPS-pentacene solution, TIPS-pentacene droplet flow can be induced, causing greater alignment. We fabricate TIPS-pentacene-based transistors to confirm the effect of this aligned state on device performance, using both optical and electrical methods.