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

doi:10.1039/c7tc04639a

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

Northwestern University

Research output: Contribution to journal › Article

8 Citations (Scopus)

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 language	English
Pages (from-to)	847-854
Number of pages	8
Journal	Journal of Materials Chemistry C
Volume	6
Issue number	4
DOIs	https://doi.org/10.1039/c7tc04639a
Publication status	Published - Jan 1 2018

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ASJC Scopus subject areas

Chemistry(all)
Materials Chemistry

Cite this

Chen, Y., Wang, G., Yang, L., Wu, J., Melkonyan, F. S., Huang, Y., Lu, Z., Marks, T. J., & Facchetti, A. (2018). Novel unsymmetrical squaraine-based small molecules for organic solar cells. Journal of Materials Chemistry C, 6(4), 847-854. https://doi.org/10.1039/c7tc04639a

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10.1039/c7tc04639a