Nanoimprinted polymer solar cell

  • Yang Y
  • Mielczarek K
  • Aryal M
 et al. 
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Abstract

Among the various organic photovoltaic devices, the conjugated polymer/fullerene approach has drawn the most research interest. The performance of these types of solar cells is greatly determined by the nanoscale morphology of the two components (donor/acceptor) and the molecular orientation/crystallinity in the photoactive layer. A vertically bicontinuous and interdigitized heterojunction between donor and acceptor has been regarded as one of the ideal structures to enable both efficient charge separation and transport. Synergistic control of polymer orientation in the nanostructured heterojunction is also critical to improve the performance of polymer solar cells. Nanoimprint lithography has emerged as a new approach to simultaneously control both the heterojunction morphology and polymer chains in organic photovoltaics. Currently, in the area of nanoimprinted polymer solar cells, much progress has been achieved in the fabrication of nanostructured morphology, control of molecular orientation/crystallinity, deposition of acceptor materials, patterned electrodes, understanding of structure?property correlations, and device performance. This review article summarizes the recent studies on nanoimprinted polymer solar cells and discusses the outstanding challenges and opportunities for future work.

Author-supplied keywords

  • chain alignment
  • charge carrier mobility
  • conjugated polymers
  • interface
  • manufacture
  • nanoimprint lithography
  • nanoscale morphology
  • nanostructure geometry
  • phase separation
  • polymer solar cells

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Authors

  • Yi Yang

  • Kamil Mielczarek

  • Mukti Aryal

  • Anvar Zakhidov

  • Walter Hu

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