Effect of solvent on fabrication of active layers in organic solar cells based on poly(3-hexylthiophene) and fullerene derivatives

Kenji Kawano, Jun Sakai, Masayuki Yahiro, Chihaya Adachi

Research output: Contribution to journalArticlepeer-review

87 Citations (Scopus)

Abstract

Investigating the effect of solvent on the fabrication of photo-active layers in bulk heterojunction organic solar cells based on poly(3-hexylthiophene) and [6,6]-phenyl C61-butyric acid methyl ester, we found the short-circuit current density (JSC) and fill factor (FF) of a cell with a photo-active layer made using materials dissolved in a mixture of o-dichlorobenzene with chloroform to be slightly higher than those of a cell made using the same materials dissolved only in chlorobenzene. Evaluating the absorption spectra, surface morphology, charge mobility, and solubility of photo-active films made using different solvents, we concluded that the higher JSC and FF were due to a larger interfacial area between the photo-active materials in the layer.

Original languageEnglish
Pages (from-to)514-518
Number of pages5
JournalSolar Energy Materials and Solar Cells
Volume93
Issue number4
DOIs
Publication statusPublished - Apr 1 2009

All Science Journal Classification (ASJC) codes

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

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