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Keywords:

  • BCP/Ag/MoO3;
  • OPV;
  • transparent cathode;
  • organic solar cells
Thumbnail image of graphical abstract

Thermally evaporable BCP/Ag/MoO3 is demonstrated as a transparent cathode for flexible OPVs. The optical transmittance of Ag film is enhanced by refractive index-matching layers. BCP/Ag/MoO3 can fulfill the optimum zero-reflection condition, resulting in high transmittance (75.5%) and low sheet resistance (8.6 ohm/sq). BCP/Ag/MoO3 cathodes could be applicable as general transparent cathodes for flexible organic optoelectronic devices.