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Ru-based donor-acce...
Ru-based donor-acceptor photosensitizer that retards charge recombination in a p-type dye-sensitized solar cell
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- Freys, Jonathan C. (författare)
- Uppsala universitet,Fysikalisk kemi,Uppsala University
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- Gardner, James M., 1982- (författare)
- KTH,Uppsala universitet,Institutionen för kemi - Ångström,Tillämpad fysikalisk kemi
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- D'Amario, Luca (författare)
- Uppsala universitet,Institutionen för kemi - Ångström,Uppsala University
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- Brown, Allison M. (författare)
- Uppsala universitet,Fysikalisk kemi,Uppsala University
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- Hammarström, Leif (författare)
- Uppsala universitet,Fysikalisk kemi,Uppsala University
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(creator_code:org_t)
- Royal Society of Chemistry (RSC), 2012
- 2012
- Engelska.
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Ingår i: Dalton Transactions. - : Royal Society of Chemistry (RSC). - 1477-9226 .- 1477-9234. ; 41:42, s. 13105-13111
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- We report on the synthesis and characterization of a donor-acceptor ruthenium polypyridyl complex as a photosensitizer for p-type dye-sensitized solar cells (DSSCs). The electrochemical, photophysical, and photovoltaic performance of two ruthenium-based photosensitizers were tested in NiO-based DSSCs; bis-(2,2′-bipyridine-4,4′-dicarboxylic acid) 2N-(1,10-phenanthroline)-4-nitronaphthalene-1,8-dicarboximide ruthenium(ii), ([Ru(dcb) 2(NMI-phen)](PF 6) 2) and tris-(2,2′-bipyridine-4,4′-dicarboxylic acid) 3 ruthenium(ii), [(Ru(dcb) 3)Cl 2]. The presence of an electron-accepting group, 4-nitronaphthalene-1,8-dicarboximide (NMI), attached to the phenanthroline of [Ru(dcb) 2(NMI-phen)] 2+ resulted in long-lived charge separation between reduced [Ru(dcb) 2(NMI-phen)] 2+ and NiO valence band holes; 10-50 μs. In the reduced state for [Ru(dcb) 2(NMI-phen)] 2+, the electron localized on the distal NMI group. In tests with I 3 -/I - and Co(4,4′-di-tert-butyl-bipyridine) 3 2+/3+ electrolytes, [Ru(dcb) 2(NMI-phen)] 2+ outperformed [Ru(dcb) 3] 2+ in solar cell efficiency in devices. A record APCE (25%) was achieved for a ruthenium photosensitizer in a p-type DSSC. Insights on photosensitizer regeneration kinetics are included.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Nyckelord
- 1
- 10-phenanthroline
- Charge recombinations
- Charge separations
- Dicarboxylic acid
- Donor-acceptors
- Dye-Sensitized solar cell
- Dye-sensitized solar cells
- Electron-accepting
- P-type
- Phenanthrolines
- Photophysical
- Photovoltaic performance
- Reduced-state
- Ruthenium polypyridyl complexes
- Solar cell efficiencies
- Valence-band holes
- Photoelectrochemical cells
- Ruthenium
- Ruthenium compounds
- Solar cells
- Photosensitizers
- SRA - Energy
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- ref (ämneskategori)
- art (ämneskategori)
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