[7p-N304-1~16] 12.4 Organic light-emitting devices and organic transistors

4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[7p-N304-9] Monolayer organic single-crystalline transistors with surface-modified gold electrodes transferred

〇Aoi Morimoto¹, Yu Yamashita^1,2, Tatsuyuki Makita⁴, Kayoko Sato⁴, Yuki Kobayashi⁴, Shun Watanabe¹, Jun Takeya^1,2,3,4 (1.Univ. of Tokyo, 2.NIMS, 3.JST CREST, 4.Pi CRYSTAL)

Keywords:

OFET,contact resistance

Single-crystal organic semiconductors, which exhibit high carrier mobility, mechanical flexibility, and low weight, are promising materials for flexible organic field-effect transistors (OFETs). In this study, we present a fabrication process that integrates an electrode transfer technique—with the capability to form structurally well-defined metal–semiconductor interfaces—with lithographic patterning. Specifically, gold electrodes modified with pentafluorobenzenethiol (PFBT) were uniformly laminated onto C9-DNBDT-NW ultrathin single-crystal films. The resulting OFETs demonstrate a remarkably low contact resistance of 67 Ω·cm and a high cutoff frequency of 75 MHz, highlighting the method’s strong potential for high-speed and highly integrated organic electronic applications.