Novel unsymmetrical squaraine-based small molecules for organic solar cells

Yao Chen, Gang Wang, Lin Yang, Jianglin Wu, Ferdinand S. Melkonyan, Yan Huang*, Zhiyun Lu, Tobin J. Marks, Antonio Facchetti

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

A new unsymmetrical squaraine dye (USQ) series for organic solar cells (OSC) is synthesized by a simple route without using highly toxic reagents. These USQs exhibit a low bandgap of 1.57 eV and HOMO energies of ∼-5.2-5.3 eV. Despite the very simple molecular structures, OSC devices based on these USQs exhibit an impressive open-circuit voltage of 0.92 V and power conversion efficiencies (PCEs) approaching 5%, achieved without using any additives or post film deposition treatment. The results indicate that USQs are promising materials for sustainable energy applications.

Original languageEnglish (US)
Pages (from-to)847-854
Number of pages8
JournalJournal of Materials Chemistry C
Volume6
Issue number4
DOIs
StatePublished - 2018

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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