How to Reduce Charge Recombination in Organic Solar Cells: There are Still Lessons to Learn from P3HT:PCBM

  title={How to Reduce Charge Recombination in Organic Solar Cells: There are Still Lessons to Learn from P3HT:PCBM},
  author={Sebastian Wilken and Dorothea Scheunemann and Staffan Dahlstr{\"o}m and Mathias Nyman and J{\"u}rgen Parisi and Ronald {\"O}sterbacka},
  journal={Advanced Electronic Materials},
Suppressing charge recombination is key for organic solar cells to become commercial reality. However, there is still no conclusive picture of how recombination losses are influenced by the complex nanoscale morphology. Here, new insight is provided by revisiting the P3HT:PCBM blend, which is still one of the best performers regarding reduced recombination. By changing small details in the annealing procedure, two model morphologies are prepared that vary in phase separation, molecular order… 

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