Long-Lived Charge Separated State in NiO-Based p‑Type Dye-Sensitized Solar Cells with Simple Cyclometalated Iridium Complexes

Three new cyclometalated iridium complexes were prepared and investigated on nanocrystalline NiO cathodes. Nanosecond transient absorption spectroscopy experiments show they present a surprisingly slow geminate charge recombination upon excitation on NiO, representing thus the first examples of simp...

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Published in:The journal of physical chemistry letters 2014-07, Vol.5 (13), p.2254-2258
Main Authors: Gennari, Marcello, Légalité, Florent, Zhang, Lei, Pellegrin, Yann, Blart, Errol, Fortage, Jérôme, Brown, Allison M, Deronzier, Alain, Collomb, Marie-Noëlle, Boujtita, Mohammed, Jacquemin, Denis, Hammarström, Leif, Odobel, Fabrice
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Language:English
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Chemical Sciences
Energy Conversion and Storage
Energy and Charge Transport
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cited_by cdi_FETCH-LOGICAL-a386t-9d31be1eccea6a425ed76d0988eb70ac43500574672830612283ba372cfb35f83
cites cdi_FETCH-LOGICAL-a386t-9d31be1eccea6a425ed76d0988eb70ac43500574672830612283ba372cfb35f83
container_end_page 2258
container_issue 13
container_start_page 2254
container_title The journal of physical chemistry letters
container_volume 5
creator Gennari, Marcello
Légalité, Florent
Zhang, Lei
Pellegrin, Yann
Blart, Errol
Fortage, Jérôme
Brown, Allison M
Deronzier, Alain
Collomb, Marie-Noëlle
Boujtita, Mohammed
Jacquemin, Denis
Hammarström, Leif
Odobel, Fabrice
description Three new cyclometalated iridium complexes were prepared and investigated on nanocrystalline NiO cathodes. Nanosecond transient absorption spectroscopy experiments show they present a surprisingly slow geminate charge recombination upon excitation on NiO, representing thus the first examples of simple sensitizers with such feature. These complexes were used in dye-sensitized solar cells using nanocrystalline NiO film as semiconductor. The long-lived charge separated state of these Ir complexes make them compatible with other redox mediators than I3 −/I−, such as a cobalt electrolyte and enable to reach significantly high open circuit voltage.
doi_str_mv 10.1021/jz5009714
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source American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
subjects Chemical Sciences
Energy Conversion and Storage
Energy and Charge Transport
title Long-Lived Charge Separated State in NiO-Based p‑Type Dye-Sensitized Solar Cells with Simple Cyclometalated Iridium Complexes
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