Title
Efficient dye-sensitized solar cells based on bioinspired copper redox mediators by tailoring counterions
Author's Department
Energy Materials Laboratory
Document Type
Research Article
Publication Date
1-1-2022
Abstract
In recent years, copper(II/I) complexes have attracted growing interest as redox mediators in dye-sensitized solar cells. Here, we report a new class of copper complexes bearing a bis(2-pyridylmethyl)-1,2-ethanedithiol ligand, coded as [Cu(N2S2)]2+/+, with tetrafluoroborate ([BF4]−) and hexafluorophosphate ([PF6]−) counterions. Strikingly, it is discovered that the solubility and diffusion coefficients of Cu(I) species are dramatically improved by changing the counterion from [BF4]− to [PF6]−. As a result, DSCs incorporating the latter redox system show a much enhanced short-circuit current density and fill factor, which in turn lead to a superior overall power conversion efficiency (PCE) of 10.3% under one sun illumination (100 mW cm−2, AM 1.5G). This has been the highest PCE reported so far for copper redox mediators with sulfur-coordinating ligands in DSCs. Thus, this work provides an effective strategy for further design of more efficient redox mediators in DSCs.
First Page
4131
Last Page
4136
Recommended Citation
APA Citation
Allam, N.
Li, L.
Zhao, L.
&
Jiang, X.
(2022). Efficient dye-sensitized solar cells based on bioinspired copper redox mediators by tailoring counterions. 10, 4131–4136.
https://fount.aucegypt.edu/faculty_journal_articles/5073
MLA Citation
Allam, Nageh, et al.
"Efficient dye-sensitized solar cells based on bioinspired copper redox mediators by tailoring counterions." vol. 10, 2022, pp. 4131–4136.
https://fount.aucegypt.edu/faculty_journal_articles/5073