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Periodic Array of Polyelectrolyte-Gated Organic Transistors from Electrospun Poly(3-hexylthiophene) Nanofibers
- Authors
- Lee, Sung W.; Lee, Hyun J.; Choi, Ji H.; Koh, Won G.; Myoung, Jae M.; Hur, Jae H.; Park, Jong J.; Cho, Jeong H.; Jeong, Unyong
- Issue Date
- Jan-2010
- Publisher
- AMER CHEMICAL SOC
- Keywords
- Organic field effect transistors; polyelectrolyte; P3HT nanofiber; electrospinning; ion gel
- Citation
- NANO LETTERS, v.10, no.1, pp.347 - 351
- Journal Title
- NANO LETTERS
- Volume
- 10
- Number
- 1
- Start Page
- 347
- End Page
- 351
- ISSN
- 1530-6984
- Abstract
- High-performance organic field-effect. transistors (OFETs) based on polyelectrolyte gate dielectric and electrospun poly(3-hexylthiophene) (P3HT) nanofibers were fabricated oil a flexible polymer substrate. The use of UV-crosslinked hydrogel including ionic liquids for the insulating layer enabled fast and large-area fabrication of transistor arrays. The P3HT nanofibers were directly deposited on the methacrylated polymer substrate. During UV irradiation through a patterned mask, the methacrylate groups formed covalent bonds with the patterned polyelectrolyte dielectric layer, which provides mechanical stability to the devices. The OFETs operate at voltages of less than 2 V. The average field-effect mobility and on/off ratio were similar to 2 cm(2)/(Vs) and 10(5), respectively.
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