journal article·2023-07-12

Amorphous Fluorinated Acrylate Polymer Dielectrics for Flexible Transistors and Logic Gates with High Operational Stability

Heqing Ye, Ka Yeon Ryu, Hyeok-jin Kwon, Hyunji Lee, Rixuan Wang, Jisu Hong, Hyun Ho Choi, Sang Yong Nam, Jihoon Lee, Hoyoul Kong, Se Hyun Kim

ACS Applied Materials & Interfaces· Volume 15· Issue 27
Publisher page

Abstract

Fluorinated amorphous polymeric gate-insulating materials for organic thin-film transistors (OTFTs) not only form hydrophobic surfaces but also significantly reduce traps at the interface between the organic semiconductor and gate insulator. Therefore, these polymeric materials can enhance the OTFT's operation stability. In this study, we synthesized a new polymeric insulating material series composed of acrylate and fluorinated functional groups (with different ratios) named MBHCa-F and used them as gate insulators for OTFTs and in other applications. The insulating features of the MBHCa-F polymers, including surface energy, surface atomic content properties, dielectric constant, and leakage current, were clearly analyzed with respect to the content of the fluorinated functional groups. At higher fluorine-based functional group content, the polymeric series exhibited higher fluorine-based contents at the surface and superior electrical properties, such as field-effect mobility and driving stability, at OTFTs. Therefore, we believe that this study provides a substantial method for synthesizing polymeric insulating materials to enhance the operational stability and electrical performance of OTFTs.
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Research context

OpenAlex topics: Organic Electronics and Photovoltaics · Advanced Sensor and Energy Harvesting Materials · Thin-Film Transistor Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea

Research Institute for Green Energy Convergence Techonology, Gyeongsang National University, Jinju 52828, Republic of Korea

Department of Chemistry and Research Institute of Nature Science, Gyeongsang National University, Jinju 52828, Republic of Korea

Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 37673, Korea

Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States

Research Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology, Ulsan 44412 Republic of Korea

Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, United States

Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju 27469, Republic of Korea

School of Chemical Engineering, Konkuk University, Seoul 05029, Korea

Funding

National Research Foundation of Korea · Ministry of Trade, Industry and Energy

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