title: Photochemical Molecular Tailoring for Efficient Diffusion and Reorganization of Organic Nanocrystals for Ultra-Flexible Organic Semiconductor Arrays.
abstract: Solution-processed organic single crystals with high carrier mobility have been actively investigated for diverse applications such as displays, sensors, and next generation electronics on a flexible platform. However, the lack of precise alignment and growth control of organic single crystals impedes the widespread adoption of organic materials in an industrial perspective. Here, a photochemical modification approach is reported tailoring the solubility and molecular diffusivity of polymeric sacrificial layer and sequential batch-type vapor annealing to implement high-performance (average saturation mobility: 8.01 cm2V-1s-1) organic single-crystal thin film transistors with large channel width including multiple aligned single crystals. Additionally, the mechanical properties of the organic single crystals are systematically investigated with extreme strain conditions such as bending radius of 150 μm.
authors.affiliation: School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, 06974, Korea.
authors.forename: Jingu
authors.initials: J
authors.lastname: Kang
authors.affiliation: School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, 06974, Korea.
authors.forename: Jaehyun
authors.initials: J
authors.lastname: Kim
authors.affiliation: School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, 06974, Korea.
authors.forename: Jeong-Wan
authors.initials: JW
authors.lastname: Jo
authors.affiliation: School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, 06974, Korea.
authors.forename: Jae Sang
authors.initials: JS
authors.lastname: Heo
authors.affiliation: Department of Chemistry, Chung-Ang University, Seoul, 06974, Korea.
authors.forename: Myung-Gil
authors.initials: MG
authors.lastname: Kim
authors.affiliation: School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 16419, Korea.
authors.forename: Yong-Hoon
authors.initials: YH
authors.lastname: Kim
authors.affiliation: School of Advanced Materials Engineering, Hanbat National University, Daejeon, 34158, Korea.
authors.forename: Jaekyun
authors.initials: J
authors.lastname: Kim
authors.affiliation: School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, 06974, Korea.
authors.forename: Sung Kyu
authors.initials: SK
authors.lastname: Park
keywords: batch process; organic molecules; organic single crystal arrays; organic thin film transistors; photochemical process