Marked alkyl- Vs alkenyl-substitutent effects on squaraine dye solid-state structure, carrier mobility, and bulk-heterojunction solar cell efficiency

Diego Bagnis, Luca Beverina, Hui Huang, Fabio Silvestri, Yan Yao, Henry Yan, Giorgio A. Pagani, Tobin J Marks, Antonio Facchetti

Research output: Contribution to journalArticle

171 Citations (Scopus)

Abstract

(Figure Presented) We report two new squaralne dyes substituted at the pyrrolic rings with n-hexyl (squaraine 1) or n-hexenyl (squaraine 2) chains. Although Internal molecular structure variations are minimal, the presence of the terminal double bond results in a much more compact solid-state structure, dramatically affecting charge transport in the thin films; the hole mobility of 2 is ∼ 5x that of 1, and the BHJOPV power conversion efficiency (PCE) of 2 is ∼2x that of 1. PCEs surpassing 2% for ambient solution-processed devices are demonstrated, the largest so far achieved for squaraine-based organic solar cells.

Original languageEnglish
Pages (from-to)4074-4075
Number of pages2
JournalJournal of the American Chemical Society
Volume132
Issue number12
DOIs
Publication statusPublished - Mar 31 2010

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Carrier State
Hole mobility
Carrier mobility
Molecular structure
Conversion efficiency
Heterojunctions
Charge transfer
Solar cells
Coloring Agents
Dyes
Thin films
Molecular Structure
Equipment and Supplies
Organic solar cells
squaraine

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Marked alkyl- Vs alkenyl-substitutent effects on squaraine dye solid-state structure, carrier mobility, and bulk-heterojunction solar cell efficiency. / Bagnis, Diego; Beverina, Luca; Huang, Hui; Silvestri, Fabio; Yao, Yan; Yan, Henry; Pagani, Giorgio A.; Marks, Tobin J; Facchetti, Antonio.

In: Journal of the American Chemical Society, Vol. 132, No. 12, 31.03.2010, p. 4074-4075.

Research output: Contribution to journalArticle

Bagnis, Diego ; Beverina, Luca ; Huang, Hui ; Silvestri, Fabio ; Yao, Yan ; Yan, Henry ; Pagani, Giorgio A. ; Marks, Tobin J ; Facchetti, Antonio. / Marked alkyl- Vs alkenyl-substitutent effects on squaraine dye solid-state structure, carrier mobility, and bulk-heterojunction solar cell efficiency. In: Journal of the American Chemical Society. 2010 ; Vol. 132, No. 12. pp. 4074-4075.
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AU - Silvestri, Fabio

AU - Yao, Yan

AU - Yan, Henry

AU - Pagani, Giorgio A.

AU - Marks, Tobin J

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