High performance organic photovoltaic cells with blade-coated active layers

Siew Lay Lim, En Chen Chen, Chun Yu Chen, Kok Haw Ong, Zhi Kuan Chen*, Hsin-Fei Meng

*Corresponding author for this work

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

High performance bulk heterojunction organic photovoltaic (OPV) cells with blade-coated active layers of POD2T-DTBT blended with [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) are demonstrated in this work. The blade-coated cells exhibit power conversion efficiencies of up to 6.74%, which is comparable to those of conventional spincoated cells but obtained with just a fraction of the material amount used for spincoating. The choice of solvent and the process conditions are manipulated to achieve dense, well-separated morphology which increases the interfacial area for charge dissociation in the blend film. The blade coating technique can be applied in the fabrication of large area, high performance OPV cells with highly efficient materials usage.

Original languageEnglish
Pages (from-to)292-297
Number of pages6
JournalSolar Energy Materials and Solar Cells
Volume107
DOIs
StatePublished - 1 Dec 2012

Keywords

  • Blade coating
  • Low bandgap polymer
  • Morphology
  • Organic photovoltaic cell

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