期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 5, 期 13, 页码 2254-2258出版社
AMER CHEMICAL SOC
DOI: 10.1021/jz5009714
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资金
- POSITIF [ANR-12-PRGE-0016-01]
- HETEROCOP [ANR-09-BLAN-0183-01]
- LABEX ARCANE [ANR-11-LABX-0003-01]
- Region des Pays de la Loire
- COST program [CM1202]
- European Research Council (ERC) [Marches-278845]
- Region des Pays de la Loire [Marches-278845]
- recrutement sur poste strategique
- GENCI-CINES/IDRIS [c2012085117]
- Swedish Energy Agency
- K & A Wallenberg Foundation
- Carl Trygger Foundation
- Chinese Scholarship Council
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 I-3(-)/I-, such as a cobalt electrolyte and enable to reach significantly high open circuit voltage.
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