Issue 42, 2012

Solution-processed organic photovoltaic cells based on a squaraine dye

Abstract

In this work, 2,4-bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl] squaraine (SQ) was systematically studied as an electron donor in solution processed photovoltaic cells, showing power conversion efficiency of >4.0% under AM1.5G 1 sun illumination at room temperature. Low mobilities were found to limit charge transport in the bulk heterojunctions. Efficiency was thus improved to 5.1% at 80 °C mainly due to improvement of photocurrent extraction. We also demonstrated that the SQ compound synthesized via a simple method has high purity, and thus can be used in photovoltaic cells without further purification. Our results suggest the huge potential of SQ and its analogs in organic photovoltaic applications.

Graphical abstract: Solution-processed organic photovoltaic cells based on a squaraine dye

Supplementary files

Article information

Article type
Paper
Submitted
18 Jul 2012
Accepted
29 Aug 2012
First published
29 Aug 2012

Phys. Chem. Chem. Phys., 2012,14, 14661-14666

Solution-processed organic photovoltaic cells based on a squaraine dye

G. Chen, H. Sasabe, Z. Wang, X. Wang, Z. Hong, J. Kido and Y. Yang, Phys. Chem. Chem. Phys., 2012, 14, 14661 DOI: 10.1039/C2CP42445B

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