title: Patterning technology for solution-processed organic crystal field-effect transistors.
abstract: Organic field-effect transistors (OFETs) are fundamental building blocks for various state-of-the-art electronic devices. Solution-processed organic crystals are appreciable materials for these applications because they facilitate large-scale, low-cost fabrication of devices with high performance. Patterning organic crystal transistors into well-defined geometric features is necessary to develop these crystals into practical semiconductors. This review provides an update on recentdevelopment in patterning technology for solution-processed organic crystals and their applications in field-effect transistors. Typical demonstrations are discussed and examined. In particular, our latest research progress on the spin-coating technique from mixture solutions is presented as a promising method to efficiently produce large organic semiconducting crystals on various substrates for high-performance OFETs. This solution-based process also has other excellent advantages, such as phase separation for self-assembled interfaces via one-step spin-coating, self-flattening of rough interfaces, andin situpurification that eliminates the impurity influences. Furthermore, recommendations for future perspectives are presented, and key issues for further development are discussed.
authors.affiliation: School of Electronic Science and Engineering and Jiangsu Provincial Key Laboratory of Photonic and Electronic Materials, Nanjing University, Nanjing, 210093, People's Republic of China; International Center for Materials Nanoarchitectronics(WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Yun
authors.initials: Y
authors.lastname: Li
authors.affiliation: School of Electronic Science and Engineering and Jiangsu Provincial Key Laboratory of Photonic and Electronic Materials, Nanjing University, Nanjing, 210093, People's Republic of China.
authors.forename: Huabin
authors.initials: H
authors.lastname: Sun
authors.affiliation: School of Electronic Science and Engineering and Jiangsu Provincial Key Laboratory of Photonic and Electronic Materials, Nanjing University, Nanjing, 210093, People's Republic of China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Shi
authors.affiliation: International Center for Materials Nanoarchitectronics(WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Tsukagoshi
keywords: Organic crystals; Organic filed-effect transistors; Patterning; Solution-assisted processes