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

168 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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