Fully solution-processed organic thin-film transistors by consecutive roll-to-roll gravure printing

Jaemin Kim, Tomi Hassinen, Wi Hyoung Lee, Sunglim Ko

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)

Abstract

A high-performance/flexible organic thin-film transistor (OTFT) is fabricated by using all-step solution processes, which are composed of roll-to-roll gravure, plate-to-roll gravure and inkjet printing with the least process number of 5. Roll-to-roll gravure printing is used to pattern source/drain electrodes on plastic substrate while semiconductor and dielectric layers are printed by consecutive plate-to-roll gravure printing. Finally, inkjet printing of Ag organometallic ink is used to pattern the gate electrode. The fabricated OTFT exhibits excellent electrical performance, field-effect mobility over 0.2 cm2/Vs, which is one of the best compared to the previous works. The deposition of a self-assembled monolayer on the source-drain electrodes results in a higher work function which is suitable for a p-type polymer semiconductor. Moreover, the formation of dense gate electrode line on hydrophobic dielectric is achieved by selecting suitable Ag ink.
Original languageEnglish
Pages (from-to)361-366
Number of pages6
JournalOrganic Electronics
Volume42
DOIs
Publication statusPublished - 1 Mar 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Thin film transistors
printing
Printing
transistors
Electrodes
thin films
Ink
electrodes
inks
Semiconductor materials
Self assembled monolayers
Organometallics
Polymers
Plastics
Substrates
plastics
polymers

Keywords

  • gravure printing
  • organic semiconductor thin-film transistor
  • roll-to-roll
  • self-assembled monolayer
  • ultra-violet photoelectron spectroscopy
  • Roll-to-roll

Cite this

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abstract = "A high-performance/flexible organic thin-film transistor (OTFT) is fabricated by using all-step solution processes, which are composed of roll-to-roll gravure, plate-to-roll gravure and inkjet printing with the least process number of 5. Roll-to-roll gravure printing is used to pattern source/drain electrodes on plastic substrate while semiconductor and dielectric layers are printed by consecutive plate-to-roll gravure printing. Finally, inkjet printing of Ag organometallic ink is used to pattern the gate electrode. The fabricated OTFT exhibits excellent electrical performance, field-effect mobility over 0.2 cm2/Vs, which is one of the best compared to the previous works. The deposition of a self-assembled monolayer on the source-drain electrodes results in a higher work function which is suitable for a p-type polymer semiconductor. Moreover, the formation of dense gate electrode line on hydrophobic dielectric is achieved by selecting suitable Ag ink.",
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Fully solution-processed organic thin-film transistors by consecutive roll-to-roll gravure printing. / Kim, Jaemin; Hassinen, Tomi; Lee, Wi Hyoung; Ko, Sunglim.

In: Organic Electronics, Vol. 42, 01.03.2017, p. 361-366.

Research output: Contribution to journalArticleScientificpeer-review

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