Fully Drawn All‐Organic Flexible Transistors Prepared by Capillary Pen Printing on Flexible Planar and Curvilinear Substrates
- Authors
- Kang, Boseok; Park, Namwoo Department of Chemical &; Min, Honggi; Lee, Junghwi; Jeong, Heejeong; Baek, Seolhee; Cho, Kilwon; Lee, Hwa sung
- Issue Date
- Dec-2015
- Publisher
- Wiley-VCH Verlag
- Keywords
- capillary-pen printing; organic electronics; organic field-effect transistors; organic semiconductors; patterning methods
- Citation
- Advanced Electronic Materials, v.1, no.12, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- Advanced Electronic Materials
- Volume
- 1
- Number
- 12
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/16453
- DOI
- https://doi.org/10.1002/aelm.201500301
- ISSN
- 2199-160X
- Abstract
- Printing technologies are instrumental to the fabrication of low-cost lightweight flexible electronic devices and circuits, which are necessary to produce wearable electronic applications. However, attaining fully printed devices on flexible films over large areas has typically been a challenge. Here, the fabrication of fully drawn all-organic field-effect transistor (FET) arrays on mechanically flexible substrates using a capillary-pen printing method is demonstrated. A highly crystalline organic semiconductor (active layer), a smooth insulating polymer (dielectric layer), and a conducting polymer (source, drain, and gate electrodes) are deposited from solution sequentially. The bottom-gate bottom-contact FETs drawn onto flexible substrates exhibit superior field-effect mobilities of up to 0.54 cm2 V−1 s−1, good reproducibility, operational stability, and mechanical bendability. Furthermore, to emphasize the methodological advantages of the capillary-pen printing, an organic FET (OFET) array on a curvilinear substrate of a plastic straw and the repairing concept for a broken electrical circuit are demonstrated. These results indicate that capillary pen printing shows promise as a manufacturing technique for a wide range of large-area electronic applications. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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