Exploring spray coating as a deposition technique for the fabrication of solution-processed solar cells

Claudio Girotto, Barry P. Rand, Jan Genoe, Paul Heremans

Research output: Contribution to journalArticle

152 Scopus citations

Abstract

We investigate the characteristics of airbrush spray coated polymer solar cells based on a mixture of poly(3-hexyl thiophene) and (6,6)-phenyl C61-butyric acid methyl ester, deposited with different settings. We show smooth films yielding spray coated solar cells with power conversion efficiencies of 2.8%. In addition, we find that the spray coating technique allows the realization of polymer solar cells with a structural gradient in the vertical direction: the femtoliter scale droplets, distinctive of spray coating, dry very rapidly and subsequent layers can be deposited from the same solvent, without completely dissolving the underlying layers.

Original languageEnglish (US)
Pages (from-to)454-458
Number of pages5
JournalSolar Energy Materials and Solar Cells
Volume93
Issue number4
DOIs
StatePublished - Apr 1 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

Keywords

  • Bulk heterojunction
  • Organic solar cells
  • Solution processing
  • Spray coating
  • Structural control

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