The authors report the fabrication of one-dimensional crystal arrays of triisopropylsilylethynyl pentacene (TIPS PEN) via simple drop casting on a tilted substrate. By pinning a solution droplet on the tilted substrate, an array of ribbon-shaped crystals aligned in the tilted direction was formed on the substrate. X-ray diffraction analysis revealed that these crystals were oriented in the crystal growth direction. A thin film transistor based on such an array of TIPS PEN crystals was found to have a high field-effect mobility of 0.3 cm2/V s, which results from the directed organization of the π-conjugated molecules.
Bibliographical noteFunding Information:
This work was supported by a grant (F0004022-2006-22) from the Information Display R&D Center under the 21st Century Frontier R&D Program, the ERC Program of MOST/KOSEF (R11-2003-006-03005-0), the BK21 Program of the Ministry of Education and Human Resources Development of Korea, and the Pohang Accelerator Laboratory for providing the 8C1 and 10C1 beamlines used in this study.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)