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      Molecular Switch Cobalt Redox Shuttle with a Tunable Hexadentate Ligand

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          Dye-sensitized solar cells.

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            Electron transfers in chemistry and biology

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              Dye-sensitized solar cells with 13% efficiency achieved through the molecular engineering of porphyrin sensitizers.

              Dye-sensitized solar cells have gained widespread attention in recent years because of their low production costs, ease of fabrication and tunable optical properties, such as colour and transparency. Here, we report a molecularly engineered porphyrin dye, coded SM315, which features the prototypical structure of a donor-π-bridge-acceptor and both maximizes electrolyte compatibility and improves light-harvesting properties. Linear-response, time-dependent density functional theory was used to investigate the perturbations in the electronic structure that lead to improved light harvesting. Using SM315 with the cobalt(II/III) redox shuttle resulted in dye-sensitized solar cells that exhibit a high open-circuit voltage VOC of 0.91 V, short-circuit current density JSC of 18.1 mA cm(-2), fill factor of 0.78 and a power conversion efficiency of 13%.
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                Author and article information

                Contributors
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                Journal
                Journal of the American Chemical Society
                J. Am. Chem. Soc.
                American Chemical Society (ACS)
                0002-7863
                1520-5126
                January 18 2023
                January 03 2023
                January 18 2023
                : 145
                : 2
                : 1367-1377
                Affiliations
                [1 ]Department of Chemistry, Michigan State University, 578 S Shaw Lane, East Lansing, Michigan48823, United States
                [2 ]Department of Chemistry and Biochemistry, Coulter Hall, University of Mississippi, University, Mississippi38677, United States
                [3 ]UES, Inc. Research Scientist, Air Force Research Labs, Materials and Manufacturing Directorate, 2230 Tenth Street B655 R198, WPAFB, Ohio45433-7817, United States
                Article
                10.1021/jacs.2c12017
                36595559
                98e9b2e3-bec9-4bc1-934f-95c72f5427fd
                © 2023

                https://doi.org/10.15223/policy-029

                https://doi.org/10.15223/policy-037

                https://doi.org/10.15223/policy-045

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