Two similar near-infrared (IR) absorbing benzannulated AZA-bodipy dyes as near-ir sensitizers for ternary solar cells

Jie Min*, Tayebeh Ameri, Roland Gresser, Melanie Lorenz-Rothe, Derya Baran, Anna Troeger, Vito Sgobba, Karl Leo, Moritz Riede, Dirk M. Guldi, Christoph J. Brabec

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

Ternary composite inverted organic solar cells based on poly(3-hexylthiophen-2,5-diyl) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) blended with two different near-infrared absorbing benzannulated aza-BODIPY dyes, difluoro-bora-bis-(1-phenyl-indoyl)-azamethine (1) or difluoro-bora-bis-(1-(5-methylthiophen)-indoyl)-azamethine (2), were constructed and characterized. The amount of these two aza-BODIPY dyes, within the P3HT and PCBM matrix, was systematically varied, and the characteristics of the respective devices were recorded. Although the addition of both aza-BODIPY dyes enhanced the absorption of the blends, only the addition of 1 improved the overall power conversion efficiency (PCE) in the near-infrared (IR) region. The present work paves the way for the integration of near-infrared absorbing aza-BODIPY derivatives as sensitizers in ternary composite solar cells.

Original languageEnglish (US)
Pages (from-to)5609-5616
Number of pages8
JournalACS Applied Materials and Interfaces
Volume5
Issue number12
DOIs
StatePublished - Jun 26 2013

Keywords

  • aza-BODIPY dye
  • inverted organic solar cells
  • near-IR absorbing
  • power conversion efficiency
  • sensitizer
  • ternary composite solar cells

ASJC Scopus subject areas

  • Materials Science(all)

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