The 81st JSAP Autumn Meeting, 2020

Presentation information

Oral presentation

12 Organic Molecules and Bioelectronics » 12.4 Organic light-emitting devices and organic transistors

[9a-Z11-1~13] 12.4 Organic light-emitting devices and organic transistors

Wed. Sep 9, 2020 9:00 AM - 12:30 PM Z11

Takashi Nagase(Osaka Pref. Univ.), Masatoshi Kitamura(Kobe Univ.)

11:30 AM - 11:45 AM

[9a-Z11-10] Meniscus-controlled printing of single-crystal semiconductor on highly hydrophobic surfaces and extremely sharp-switching TFT operation

〇(D)Gyo Kitahara1, Satoru Inoue1, Toshiki Higashino2, Mitsuhiro Ikawa1, Satoshi Matsuoka1, Shunto Arai1, Tatsuo Hasegawa1 (1.Univ. Tokyo, 2.AIST)

Keywords:organic semiconductor, thin-film transistors, printed electronics

We conducted printing of single-crystal semiconductor layers on top of highly hydrophobic gate dielectric polymer, Cytop®, which is effective for improving switching characteristics of thin-film transistors. We observed that the metal-film area patterned on Cytop layer acts as hydrophilic region and helps semiconductor solution become wettable even on Cytop surface, thus leading to successful single-crystalline film formation. The obtained Cytop/semiconductor interface affords highly sharp subthreshold swing (67 mV/dec on average), which can be ascribed to the effective elimination of carrier trap states on the interface.