Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Fabrication of Ag Grid Patterned PET Substrates by Thermal Roll-Imprinting for Flexible Organic Solar Cells

가열롤 임프린팅 방법을 이용한 유연 유기태양전지용 Ag 그리드 패턴 PET 기판 제작

  • Cho, Jung Min (School of Global Convergence Studies, Hanbat University) ;
  • Jo, Jeongdai (Department of Printed Electronics, Korea Institute of Machinery and Materials) ;
  • Kim, Taeil (School of Global Convergence Studies, Hanbat University) ;
  • Kim, Dong Soo (School of Global Convergence Studies, Hanbat University)
  • 조정민 (한밭대학교 글로벌융합학부) ;
  • 조정대 (한국기계연구원) ;
  • 김태일 (한밭대학교 글로벌융합학부) ;
  • 김동수 (한밭대학교 글로벌융합학부)
  • Received : 2014.09.11
  • Accepted : 2014.10.13
  • Published : 2014.11.01
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Abstract

Silver (Ag) grid patterned PET substrates were manufactured by thermal roll-imprinting methods. We coated highly conductive layer (HCL) as a supply electrode on the Ag grid patterned PET in the three kinds of conditions. One was no-HCL without conductive PEDOT:PSS on the Ag grid patterned PET substrate, another was thin-HCL coated with ~50 nm thickness of conductive PEDOT:PSS on the Ag grid PET, and the other was thick-HCL coated with ~95 nm thickness of conductive PEDOT:PSS. These three HCLs in order showed 73.8%, 71.9%, and 64.7% each in transmittance, while indicating $3.84{\Omega}/{\Box}$, $3.29{\Omega}/{\Box}$, and $2.65{\Omega}/{\Box}$ each in sheet resistance. Fabrication of organic solar cells (OSCs) with HCL Ag grid patterned PET substrates showed high power conversion efficiency (PCE) on the thin-HCL device. The thick-HCL device decreased efficiency due to low open circuit voltage ($V_{OC}$). And the Ag grid pattern device without HCL had the lowest energy efficiency caused by quite low short current density ($J_{SC}$).

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References

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