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On the Importance of Morphology Control for Printable Solar Cells

  • Svetlana S. van Bavel
  • Joachim Loos
Chapter
Part of the Green Energy and Technology book series (GREEN)

Abstract

Polymer and hybrid solar cells have the potential to become the leading technology of the twenty-first century to convert sunlight to electrical energy because they can be easily processed from solution printing devices in a roll-to-roll fashion with high speed and low-cost. The performance of such devices critically depends on the nanoscale organization of the photoactive layer, which is composed of at least two functional materials, the electron donor and the electron acceptor forming a bulk-heterojunction; however, control of its volume morphology still is a challenge. The main requirements for the morphology of efficient photoactive layers are nanoscale phase separation for a large donor/acceptor interface area and hence efficient exciton dissociation, short and continuous percolation pathways of both components leading through the layer thickness to the corresponding electrodes for efficient charge transport and collection, and high crystallinity of both donor and acceptor materials for high charge mobility. In this chapter we review recent progress of our understanding on how the efficiency of a bulk-heterojunction printable solar cell largely depends on the local nanoscale volume organization of the photoactive layer.

Keywords

Solar Cell High Occupied Molecular Orbital Free Charge Hybrid Solar Cell Solar Cell Device 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors would like to use this opportunity to thank René Janssen, Martijn Wienk, Jan Kroon, Sjoerd Veenstra, Volker Schmidt, and Xiaoniu Yang for helpful discussions. Supported by the Dutch Polymer Institute (DPI), the Royal Dutch Academy of Sciences (KNAW), and the Chinese Academy of Sciences (Grant 2009J2-28: Visiting Professorship for Senior International Scientists).

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Copyright information

© Springer-Verlag London Limited 2011

Authors and Affiliations

  1. 1.Department of Chemical Engineering and ChemistryEindhoven University of TechnologyEindhovenThe Netherlands
  2. 2.Dutch Polymer InstituteEindhovenThe Netherlands
  3. 3.School of Physics and AstronomyUniversity of GlasgowGlasgowScotland, UK

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