Large-area single-crystal organic patterned thin films by vertically confined lateral crystal growth via capillary force lithography
- Large-area single-crystal organic patterned thin films by vertically confined lateral crystal growth via capillary force lithography
- 조상호; 박윤경; 박진선; 성명모
- Issue Date
- Applied surface science
- VOL 494-1029
- We report a one-step fabrication method for large-area single-crystal organic thin films guided through vertically confined lateral crystal growth via capillary force lithography (VC-LCG via CLF). In this method, organic molecules in ink solutions self-assemble and crystallize within the vertically confined channels of patterned molds. Vertical confinement, determined by the channel depth, played a major role with regard to the crystallization and formation of single-crystalline organic thin films. We also demonstrated its usefulness by fabricating wafer-scale arrays of single-crystal organic thin film transistors with high performance and uniformly distributed electrical properties, which could be attributed to their large-scale single-crystalline nature, homogeneous film morphologies and the suppression of multiple crystal orientations. Especially, the versatility to various organic molecules, ease of processing optimization, and uniform crystallinity all over the patterned area increase the possibility of VC-LCG to apply in the industrial process.
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