화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.78, 172-177, October, 2019
DOI10.1016/j.jiec.2019.06.019  Export Citation
Boosting the ambipolar field-effect transistor performance of a DPP-based copolymer via electrohydrodynamic-jet direct writing
Kyunghun Kim1, Cheulhwan Kim2, Yohan Jo2, Xiaowu Tang3, Jung-Hoon Lee4, Hyeok-jin Kwon1, Jihoon Lee2, 5, †, Se Hyun Kim3, †, and Tae Kyu An2, 5, †
  • 1Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
  • 2Department of IT Convergence, Korea National University of Transportation, 50 Daehak-Ro, Chungju, 27469, Republic of Korea
  • 3School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
  • 4Department of Chemistry, City University of Hong Kong, Hong Kong SAR, PR China
  • 5Department of Polymer Science & Engineering, Korea National University of Transportation, 50 Daehak-Ro, Chungju, 27469, Republic of Korea
E-mail:, ,
The electrohydrodynamic jet (EHD) printing technique allows for the direct printing of semiconducting polymer solutions to form desired patterns. Herein, an EHD-printed diketopyrrolopyrrole (DPP)-based copolymer, PTDPPSe-SiC5, was used as the active layer for the fabrication of ambipolar organic fieldeffect transistors (OFETs). Under optimized EHD conditions, the measured hole and electron mobilities of the PTDPPSe-SiC5 OFETs were 0.75 and 1.08 cm2/(V s), which led to a better electrical performance than that displayed by OFETs containing the same polymer but deposited using the spin-coating technique. Morphological analyses were carried out to help explain this difference in OFET performance, and showed the deployment of the EHD printing technique resulting in an improved polymer alignment and crystallinity, despite being performed without the use complex guided surface templates or additional pre- or post-deposition processing.
Keywords:Organic field-effect transistor (OFET);Electrohydrodynamic jet printing (EHD printing);Ambipolar semiconductor;Diketopyrrolopyrrole (DPP)
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