Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Synthesis and Photovoltaic Properties of Copolymers with Fluorinated Quinoxaline and Fluorene Moiety

Fluorine이 도입된 Quinoxaline과 Fluorene 골격을 가진 고분자의 합성 및 특성분석

  • Song, Suhee (Department of Physics, Pukyong National University) ;
  • Choi, Hyo Il (Department of Industrial Chemistry, Pukyong National University) ;
  • Shin, In Soo (Department of Physics, Pukyong National University) ;
  • Park, Seong Soo (Department of Industrial Chemistry, Pukyong National University) ;
  • Lee, Gun Dae (Department of Industrial Chemistry, Pukyong National University) ;
  • Park, Sung Heum (Department of Physics, Pukyong National University) ;
  • Jin, Youngeup (Department of Industrial Chemistry, Pukyong National University)
  • Received : 2016.05.31
  • Accepted : 2016.08.22
  • Published : 2016.10.10
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Abstract

New electron deficient moiety, 6,7-difluoro-2,3-dihexylquinoxaline, was developed for the push-pull type copolymer for organic photovoltaics (OPVs). The PFDTQxF with lower HOMO energy level was synthesized using fluorene and 6,7-difluoro- 2,3-dihexylquinoxaline by Suzuki polymerization. The PFDTQxF thin film shows two absorption peaks at 368 and 493 nm. The HOMO and LUMO energy levels of PFDTQxF are calculated -5.55 and -3.91 eV, respectively. The device comprising PFDTQxF showed a $V_{OC}$ value of 0.47 V, a $J_{SC}$ value of $4.48mA/cm^2$, and a FF of 0.32, which yielded PCE of 0.78%, under the illumination of AM 1.5.

새로운 전자 받개인 6,7-difluoro-2,3-dihexylquinoxaline을 이용하여 유기 태양 전지형 고분자를 개발하였다. Fluorene과 6,7-difluoro-2,3-dihexylquinoxaline으로 Suzuki polymerization방법을 이용하여 낮은 HOMO 에너지를 가지는 PFDTQxF 고분자를 합성하였다. 필름상태의 PFDTQxF은 368과 493 nm에서 두 개의 흡광도를 보였다. PFDTQxF의 HOMO와 LUMO 에너지는 각각 -5.55와 -3.91 eV을 나타내었다. PFDTQxF의 태양전지 소자는 0.47 V의 $V_{OC}$와 $4.48mA/cm^2$의 $J_{SC}$와 0.32의 FF를 가지고 있어 0.78%의 에너지 효율을 나타내었다.

Keywords

References

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