Spin-cast bulk heterojunction solar cells: A dynamical investigation

Kang Wei Chou, Buyi Yan, Ruipeng Li, Er Qiang Li, Kui Zhao, Dalaver H. Anjum, Steven Alvarez, Robert Gassaway, Alan Biocca, Sigurdur T. Thoroddsen, Alexander Hexemer, Aram Amassian

Research output: Contribution to journalArticlepeer-review

164 Scopus citations

Abstract

Spin-coating is extensively used in the lab-based manufacture of organic solar cells, including most of the record-setting solution-processed cells. We report the first direct observation of photoactive layer formation as it occurs during spin-coating. The study provides new insight into mechanisms and kinetics of bulk heterojunction formation, which may be crucial for its successful transfer to scalable printing processes.

Original languageBritish English
Pages (from-to)1923-1929
Number of pages7
JournalAdvanced Materials
Volume25
Issue number13
DOIs
StatePublished - 4 Apr 2013

Keywords

  • bulk heterojunction
  • in situ spectral reflectometry
  • organic photovoltaics
  • spin casting
  • time-resolved grazing incidence small and wide angle x-ray scattering

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