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Keywords:

  • hole extraction layers;
  • molybdenum disulfide;
  • solution-processed materials;
  • trap density;
  • ultrathin nanosheets
Thumbnail image of graphical abstract

Room-temperature solution-processed ultrathin 2D MoS2 nanosheets are integrated into organic solar cells as an efficient hole extraction layer. An enhanced power conversion efficiency of 8.11% is achieved, which is superior to that of traditional vacuum-evaporated molybdenum oxide.