Strong polymer molecular weight-dependent material interactions: impact on the formation of the polymer/fullerene bulk heterojunction morphology

@article{Kim2017StrongPM,
  title={Strong polymer molecular weight-dependent material interactions: impact on the formation of the polymer/fullerene bulk heterojunction morphology},
  author={Joo-Hyun Kim and Abay Gadisa and Charley Schaefer and Huifeng Yao and Bhoj Gautam and Nrup Balar and Masoud Ghasemi and Iordania Constantinou and Franky So and Brendan T. O’Connor and Kenan Gundogdu and Jianhui Hou and Harald W Ade},
  journal={Journal of Materials Chemistry},
  year={2017},
  volume={5},
  pages={13176-13188}
}
The performance of polymer–fullerene bulk heterojunction (BHJ) solar cells is highly affected by the morphology of the blend film. Though the structure of the BHJ morphology is well-understood, the relationship between relevant material interactions and BHJ morphological evolutions is poorly understood and seldom explored. In this report, we discuss the impact of polymer molecular weight (MW) on thermodynamic and kinetic phenomena which have a drastic influence on the nanoscale BHJ morphology… 
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