Spin-cast bulk heterojunction solar cells: a dynamical investigation.

Chou, Kang Wei; Yan, Buyi; Li, Ruipeng; Li, Er Qiang; Zhao, Kui; Anjum, Dalaver H; Alvarez, Steven; Gassaway, Robert et al. · Adv Mater · 2013

basic_science · Level V

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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.