High-Performance Triethylsilylethynyl Anthradithiophene Transistors Prepared without Solvent Vapor Annealing: The Effects of Self-Assembly during Dip-Coating
- Authors
- Nam, Sooji; Jang, Jaeyoung; Anthony, John. E.; Park, Jong-Jin; Park, Chan Eon; Kim, Kinam
- Issue Date
- Mar-2013
- Publisher
- AMER CHEMICAL SOC
- Keywords
- soluble acenes; evaporation-induced self-assembly; without solvent-vapor annealing solution-process; dip-coating; organic field-effect
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.5, no.6, pp.2146 - 2154
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 5
- Number
- 6
- Start Page
- 2146
- End Page
- 2154
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/163165
- DOI
- 10.1021/am303192b
- ISSN
- 1944-8244
- Abstract
- Solution-processable small-molecule organic semiconductors have recently attracted significant attention for use as the active channel layers in organic field-effect transistors due to their good intrinsic charge carrier mobility and easy processability. Dip-coating is a good method for optimizing the film morphology and molecular ordering of the small-molecular semiconductors because the drying speed can be quantitatively controlled at the air-solution-substrate contact line. Here, we report the preparation of highly crystalline triethylsilylethynyl-anthradithiophene (TES-ADT) crystal arrays that exhibit an excellent field-effect mobility (up to 1.8 cm(2)/(V s)) via an optimized one-step dip-coating process. High-quality TES-ADT crystals were grown without solvent vapor annealing postprocessing steps, which were previously thought to be essential for improving the morphology, crystallinity, and electrical characteristics of TES-ADT thin films. An interesting correlation between the optimal pull-out rate and the self-assembly tendencies of some soluble acene semiconductors was observed, and the origin of the correlation was investigated. Our work demonstrates an alternative simple approach to achieving highly crystalline TES-ADT thin films, and further proposes a prospective method for optimizing the formation of thin films via the molecular self-assembly of soluble acenes.
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