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

Dye-sensitized solar cells with 13% efficiency achieved through the molecular engineering of... 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 V OC of 0.91 V, short-circuit current density J SC of 18.1 mA cm–2, fill factor of 0.78 and a power conversion efficiency of 13%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Chemistry Springer Journals

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

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References (63)

Publisher
Springer Journals
Copyright
Copyright © 2014 by Nature Publishing Group
Subject
Chemistry; Chemistry/Food Science, general; Analytical Chemistry; Organic Chemistry; Physical Chemistry; Inorganic Chemistry; Biochemistry, general
ISSN
1755-4330
eISSN
1755-4349
DOI
10.1038/nchem.1861
Publisher site
See Article on Publisher Site

Abstract

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 V OC of 0.91 V, short-circuit current density J SC of 18.1 mA cm–2, fill factor of 0.78 and a power conversion efficiency of 13%.

Journal

Nature Chemistry – Springer Journals

Published: Feb 2, 2014

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