Electrohydrodynamic jet printing of small-molecule semiconductor crystals on chemically patterned surface for high-performance organic field-effect transistors
- Title
- Electrohydrodynamic jet printing of small-molecule semiconductor crystals on chemically patterned surface for high-performance organic field-effect transistors
- Author
- 이화성
- Keywords
- Electrohydrodynamic jet printing; Organic semiconductor; OFET; Patterning
- Issue Date
- 2022-06
- Publisher
- Elsevier BV
- Citation
- Materials Chemistry and Physics, v. 285.0, article no. 126165, Page. 1-7
- Abstract
- Direct writing of organic semiconducting crystals by electrohydrodynamic jet (EHD) printing has enabled the low-cost large-area fabrication of organic semiconducting crystal arrays without the need of complicated patterning procedures. However, morphological variations within a single printed pattern (e.g., variations in thickness, crystallinity, and local crystal orientation) caused by the "coffee-ring effect" can be an issue during their application in organic field-effect transistors (OFETs) since their charge-transport properties significantly affect the device characteristics. Herein, we report the EHD printing of small-molecule semiconducting crystals on a chemically patterned substrate to suppress the "coffee-ring effect" and produce uniform high-quality crystals oriented along the printing direction. The EHD printing of 6,13-bis(triisopropylsilylethynyl) pentacene (TIPSPEN) on hydrophobic polyurethane acrylate line patterns on a dielectric surface enables the selective and guided growth of the crystals. The OFETs with the TIPS-PEN crystals printed on the patterned surface exhibit an average field-effect mobility of 0.34 cm2/(V s), which is more than twice of that of the OFETs fabricated with crystals
- URI
- https://www.sciencedirect.com/science/article/pii/S0254058422004710https://repository.hanyang.ac.kr/handle/20.500.11754/177623
- ISSN
- 0254-0584;1879-3312
- DOI
- 10.1016/j.matchemphys.2022.126165
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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