Improving device efficiency of polymer/fullerene bulk heterojunction solar cells through enhanced crystallinity and reduced grain boundaries induced by solvent additives

Ming Shin Su, Chih Yin Kuo, Mao Chuan Yuan, U. Ser Jeng, Chun Jen Su, Kung-Hwa Wei*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

405 Scopus citations

Abstract

The power conversion efficiency of a device incorporating a crystalline polymer/fullerene thin film improves from 5% to 7.3% - a relative increase of 45% - when an additive, diiodohexane (DIH), is present during processing. The DIH-processed active layer exhibits substantially enhanced polymer crystallinity and smaller fractal-like fullerene clusters.

Original languageEnglish
Pages (from-to)3315-3319
Number of pages5
JournalAdvanced Materials
Volume23
Issue number29
DOIs
StatePublished - 2 Aug 2011

Keywords

  • conjugated polymers
  • fullerenes
  • nanostructures
  • photovoltaic devices

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