Solvent additive effects on small molecule crystallization in bulk heterojunction solar cells probed during spin casting

Louis A. Pérez, Kang Wei Chou, John A. Love, Thomas S. van der Poll, Detlef Matthias Smilgies, Thuc Quyen Nguyen, Edward J. Krämer, Aram Amassian, Guillermo C. Bazan

Research output: Contribution to journalArticlepeer-review

139 Scopus citations

Abstract

Solvent additive processing can lead to drastic improvements in the power conversion efficiency (PCE) in solution processable small molecule (SPSM) bulk heterojunction solar cells. In situ grazing incidence wide-angle X-ray scattering is used to investigate the kinetics of crystallite formation during and shortly after spin casting. The additive is shown to have a complex effect on structural evolution invoking polymorphism and enhanced crystalline quality of the donor SPSM. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish (US)
Pages (from-to)6380-6384
Number of pages5
JournalAdvanced Materials
Volume25
Issue number44
DOIs
StatePublished - Sep 4 2013

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Science(all)
  • Mechanical Engineering

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