19.31% binary organic solar cell and low non-radiative recombination enabled by non-monotonic intermediate state transition

Non-fullerene acceptors based organic solar cells represent the frontier of the field, owing to both the materials and morphology manipulation innovations. Non-radiative recombination loss suppression and performance boosting are in the center of organic solar cell research. Here, we developed a non-monotonic intermediate state manipulation strategy for state-of-the-art organic solar cells by employing 1,3,5-trichlorobenzene as crystallization regulator, which optimizes the film crystallization process, regulates the self-organization of bulk-heterojunction in a non-monotonic manner, i.e., first enhancing and then relaxing the molecular aggregation. As a result, the excessive aggregation of non-fullerene…

• NS
  National Science Foundation
• UD
  U.S. Department of Energy

  Awards: 11231, DE-AC02, DE-AC02-
• DF
  Deutsche Forschungsgemeinschaft

  Award: KO6414
• NN
  National Natural Science Foundation of China

  Awards: 51961165102, NSFC 51961165102
• GS
  Guangdong Science and Technology Department

  Award: 2019B121205001
• OO
  Office of Science

  Award: DE-AC02
• BE
  Basic Energy Sciences

  Awards: DE-AC02, KCD2S2