Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Direct Growth of Laser-Induced Graphene Electrodes on Polyimides with Different Internal Linkages

내부 연결 그룹이 다른 폴리이미드 상 레이저 유도 그래핀 전극 직접 성장

  • Jeong Min Sohn (Department of Textile System Engineering, Kyungpook National University) ;
  • Yun Chan Hwang (Department of Textile System Engineering, Kyungpook National University) ;
  • Jae Hui Park (Department of Textile System Engineering, Kyungpook National University) ;
  • Ki-Ho Nam (Department of Textile System Engineering, Kyungpook National University)
  • 손정민 (경북대학교 섬유시스템공학과) ;
  • 황윤찬 (경북대학교 섬유시스템공학과) ;
  • 박재희 (경북대학교 섬유시스템공학과) ;
  • 남기호 (경북대학교 섬유시스템공학과)
  • Received : 2023.11.20
  • Accepted : 2023.12.05
  • Published : 2023.12.31
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Abstract

We present a facile direct-writing heteroatom-doped graphene on molecularly controlled polyimides using a continuous-wave CO2 infrared laser scriber. We first synthesized polyimide (PI) films with various internal linkages such as phenylene, trifluoromethyl, and sulfone groups by conventional two-step polycondensation of 4,4'-oxydianiline with three different tetracarboxylic dianhydrides. The development of graphene from each PI film surfaces was confirmed by characterizing the heteroatom-doped (N-doped, F-doped, and S-doped) laser-induced graphene (LIG) layers. We found that both laser processing parameters (e.g., laser power and scan speed) and chemical backbones of PIs had a large influence on the formation and quality of the LIG, investigated in terms of the ID/IG and I2D Raman bands, crystalline size, surface composition, and sheet resistance. A small amount of heteroatom-doping derived from the PI backbones might easily control the electrical conductivity of LIG electrode. It is predicted that the LIG developed according to the obtained results can offer new opportunities for the required simple, low-cost, and flexible electronics and sensors.

Keywords

Acknowledgement

이 논문은 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. 2022R1C1C1004454). 또한 이 논문은 2023년도 정부(산업통산자원부)의 재원으로 한국산업기술진흥원의 지원을 받아 수행된 연구임(P0012770, 2023년 산업혁신인재성장지원사업).

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