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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Thin Metal Electrodes for Semitransparent Organic Photovoltaics

  • Lee, Kyu-Sung (School of Engineering for Matter, Transport, and Energy (SEMTE), Arizona State University (ASU), Components & Materials Research Laboratory, ETRI) ;
  • Kim, Inho (SEMTE, ASU, Electronic Materials Research Center, KIST) ;
  • Yeon, Chang Bong (Components & Materials Research Laboratory, ETRI, Department of Advanced Device Engineering, University of Science and Technology) ;
  • Lim, Jung Wook (Components & Materials Research Laboratory, ETRI, Department of Advanced Device Engineering, University of Science and Technology) ;
  • Yun, Sun Jin (Components & Materials Research Laboratory, ETRI, Department of Advanced Device Engineering, University of Science and Technology) ;
  • Jabbour, Ghassan E. (SEMTE, ASU, Solar and Alternative Energy Engineering Research Center, King Abdullah University of Science and Technology)
  • Received : 2012.12.13
  • Accepted : 2013.06.19
  • Published : 2013.08.01
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Abstract

We demonstrate semitransparent organic photovoltaics (OPVs) based on thin metal electrodes and polymer photoactive layers consisting of poly(3-hexylthiophene) and [6,6]-phenyl $C_{61}$ butyric acid methyl ester. The power conversion efficiency of a semitransparent OPV device comprising a 15-nm silver (Ag) rear electrode is 1.98% under AM 1.5-G illumination through the indium-tin-oxide side of the front anode at 100 $mW/cm^2$ with 15.6% average transmittance of the entire cell in the visible wavelength range. As its thickness increases, a thin Ag electrode mainly influences the enhancement of the short circuit current density and fill factor. Its relatively low absorption intensity makes a Ag thin film a viable option for semitransparent electrodes compatible with organic layers.

Keywords

References

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