Droplet manipulation by an external electric field for crystalline film growth

Takeshi Komino, Hirokazu Kuwabara, Masaaki Ikeda, Masayuki Yahiro, Kazuo Takimiya, Chihaya Adachi

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Combining droplet manipulation by the application of an electric field with inkjet printing is proposed as a unique technique to control the surface wettability of substrates for solution-processed organic field-effect transistors (FETs). With the use of this technique, uniform thin films of 2,7-dioctyl[1]benzothieno[2,3,-b][1]benzothiopene (C8-BTBT) could be fabricated on the channels of FET substrates without self-assembled monolayer treatment. High-speed camera observation revealed that the crystals formed at the solid/liquid interface. The coverage of the crystals on the channels depended on the ac frequency of the external electric field applied during film formation, leading to a wide variation in the carrier transport of the films. The highest hole mobility of 0.03 cm2 V-1 s-1 was obtained when the coverage was maximized with an ac frequency of 1 kHz.

Original languageEnglish
Pages (from-to)9592-9597
Number of pages6
JournalLangmuir
Volume29
Issue number30
DOIs
Publication statusPublished - Jul 30 2013

Fingerprint

Film growth
manipulators
field effect transistors
Electric fields
Crystalline materials
Organic field effect transistors
Crystals
Hole mobility
electric fields
Carrier transport
high speed cameras
High speed cameras
hole mobility
Self assembled monolayers
Substrates
liquid-solid interfaces
Field effect transistors
wettability
printing
crystals

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Komino, T., Kuwabara, H., Ikeda, M., Yahiro, M., Takimiya, K., & Adachi, C. (2013). Droplet manipulation by an external electric field for crystalline film growth. Langmuir, 29(30), 9592-9597. https://doi.org/10.1021/la401729k

Droplet manipulation by an external electric field for crystalline film growth. / Komino, Takeshi; Kuwabara, Hirokazu; Ikeda, Masaaki; Yahiro, Masayuki; Takimiya, Kazuo; Adachi, Chihaya.

In: Langmuir, Vol. 29, No. 30, 30.07.2013, p. 9592-9597.

Research output: Contribution to journalArticle

Komino, T, Kuwabara, H, Ikeda, M, Yahiro, M, Takimiya, K & Adachi, C 2013, 'Droplet manipulation by an external electric field for crystalline film growth', Langmuir, vol. 29, no. 30, pp. 9592-9597. https://doi.org/10.1021/la401729k
Komino T, Kuwabara H, Ikeda M, Yahiro M, Takimiya K, Adachi C. Droplet manipulation by an external electric field for crystalline film growth. Langmuir. 2013 Jul 30;29(30):9592-9597. https://doi.org/10.1021/la401729k
Komino, Takeshi ; Kuwabara, Hirokazu ; Ikeda, Masaaki ; Yahiro, Masayuki ; Takimiya, Kazuo ; Adachi, Chihaya. / Droplet manipulation by an external electric field for crystalline film growth. In: Langmuir. 2013 ; Vol. 29, No. 30. pp. 9592-9597.
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