Influence of different substituents linked on fluorene spacer in organic sensitizers on photovoltaic properties

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Abstract

New metal-free organic sensitizers containing a fluorene unit as a π-conjugated system, a diphenylamine as an electron donor, and a cyanoacrylic acid moiety as an electron acceptor were synthesized and used for dye-sensitized solar cells. The photophysical and electrochemical properties of these dyes were investigated, and their performances as sensitizers in solar cells were measured. One solar cell containing the n-hexyl group in the fluorene unit produced an η of 5.15% (Jsc = 9.69 mA cm-2, Voc = 0.77 V, and ff = 0.70) under 100 mW cm-2 simulated AM 1.5 G solar irradiation (100 mW cm-2). © 2013 Elsevier Ltd. All rights reserved.

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Ci, Z., Yu, X., Wang, C., Ma, T., & Bao, M. (2014). Influence of different substituents linked on fluorene spacer in organic sensitizers on photovoltaic properties. Dyes and Pigments, 104, 8–14. https://doi.org/10.1016/j.dyepig.2013.12.020

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