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Article: Functionalized alkynylplatinum(II) polypyridyl complexes for use as sensitizers in dye-sensitized solar cells

TitleFunctionalized alkynylplatinum(II) polypyridyl complexes for use as sensitizers in dye-sensitized solar cells
Authors
Keywordsdensity functional calculations
dyes/pigments
energy conversion
platinum
sensitizers
Issue Date2010
PublisherWiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/home/chemistry
Citation
Chemistry - A European Journal, 2010, v. 16 n. 40, p. 12244-12254 How to Cite?
AbstractA series of platinum(II) alkynyl-based sensitizers has been synthesized and found to show light-to-electricity conversion properties. These dyes were developed as sensitizers for the application in nanocrystalline TiO 2 dye-sensitized solar cells (DSSCs). Their photophysical and electrochemical properties were studied. The excited-state property was probed using nanosecond transient absorption spectroscopy, which showed the formation of a charge-separated state that arises from the intramolecular photoinduced charge transfer from the platinum(II) alkynylbithienylbenzothiadiazole moiety (donor) to the polypyridyl ligand (acceptor). A lifetime of 3.4 μs was observed for the charge-separated state. A dye-sensitized solar cell based on one of the complexes showed a short-circuit photocurrent of 7.12 mAcm -2, an open circuit voltage of 780 mV, and a fill factor of 0.65, thus giving an overall power conversion efficiency of 3.6%. Electric company: A series of platinum(II) alkynyl-based sensitizers has been synthesized and found to show light-to-electricity conversion properties (see graphic). A dye-sensitized solar cell based on one of the complexes shows a fill factor of 0.65 and a power-conversion efficiency of 3.6%. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Persistent Identifierhttp://hdl.handle.net/10722/133585
ISSN
2015 Impact Factor: 5.771
2015 SCImago Journal Rankings: 2.323
ISI Accession Number ID
Funding AgencyGrant Number
University of Hong Kong
University Grants Committee Areas of Excellence SchemeAoE/P-03/08
Special Equipment GrantSEG HKU07
Funding Information:

V.W.-W.Y. acknowledges support from the University of Hong Kong under the Distinguished Research Achievement Award Scheme. E.C.-H.K. acknowledges the receipt of a postgraduate studentship from the University of Hong Kong. The work is supported by the University Grants Committee Areas of Excellence Scheme (AoE/P-03/08) and the Special Equipment Grant (SEG HKU07). We are grateful to Dr. Chi-Chiu Ko of the City University of Hong Kong for his assistance in photophysical measurements. We also thank the Computer Center at the University of Hong Kong for providing the computational resources.

References
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DC FieldValueLanguage
dc.contributor.authorKwok, ECHen_HK
dc.contributor.authorChan, MYen_HK
dc.contributor.authorWong, KMCen_HK
dc.contributor.authorLam, WHen_HK
dc.contributor.authorYam, VWWen_HK
dc.date.accessioned2011-05-24T02:11:28Z-
dc.date.available2011-05-24T02:11:28Z-
dc.date.issued2010en_HK
dc.identifier.citationChemistry - A European Journal, 2010, v. 16 n. 40, p. 12244-12254en_HK
dc.identifier.issn0947-6539en_HK
dc.identifier.urihttp://hdl.handle.net/10722/133585-
dc.description.abstractA series of platinum(II) alkynyl-based sensitizers has been synthesized and found to show light-to-electricity conversion properties. These dyes were developed as sensitizers for the application in nanocrystalline TiO 2 dye-sensitized solar cells (DSSCs). Their photophysical and electrochemical properties were studied. The excited-state property was probed using nanosecond transient absorption spectroscopy, which showed the formation of a charge-separated state that arises from the intramolecular photoinduced charge transfer from the platinum(II) alkynylbithienylbenzothiadiazole moiety (donor) to the polypyridyl ligand (acceptor). A lifetime of 3.4 μs was observed for the charge-separated state. A dye-sensitized solar cell based on one of the complexes showed a short-circuit photocurrent of 7.12 mAcm -2, an open circuit voltage of 780 mV, and a fill factor of 0.65, thus giving an overall power conversion efficiency of 3.6%. Electric company: A series of platinum(II) alkynyl-based sensitizers has been synthesized and found to show light-to-electricity conversion properties (see graphic). A dye-sensitized solar cell based on one of the complexes shows a fill factor of 0.65 and a power-conversion efficiency of 3.6%. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en_HK
dc.languageengen_US
dc.publisherWiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/home/chemistryen_HK
dc.relation.ispartofChemistry - A European Journalen_HK
dc.subjectdensity functional calculationsen_HK
dc.subjectdyes/pigmentsen_HK
dc.subjectenergy conversionen_HK
dc.subjectplatinumen_HK
dc.subjectsensitizersen_HK
dc.titleFunctionalized alkynylplatinum(II) polypyridyl complexes for use as sensitizers in dye-sensitized solar cellsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0947-6539&volume=16&issue=40&spage=12244&epage=12254&date=2010&atitle=Functionalized+alkynylplatinum(II)+polypyridyl+complexes+for+use+as+sensitizers+in+dye-sensitized+solar+cells-
dc.identifier.emailChan, MY:chanmym@hku.hken_HK
dc.identifier.emailWong, KMC:wongmc@hku.hken_HK
dc.identifier.emailLam, WH:chsue@hku.hken_HK
dc.identifier.emailYam, VWW:wwyam@hku.hken_HK
dc.identifier.authorityChan, MY=rp00666en_HK
dc.identifier.authorityWong, KMC=rp00809en_HK
dc.identifier.authorityLam, WH=rp00719en_HK
dc.identifier.authorityYam, VWW=rp00822en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/chem.201001424en_HK
dc.identifier.pmid20842671-
dc.identifier.scopuseid_2-s2.0-78249283214en_HK
dc.identifier.hkuros185241en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78249283214&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume16en_HK
dc.identifier.issue40en_HK
dc.identifier.spage12244en_HK
dc.identifier.epage12254en_HK
dc.identifier.eissn1521-3765-
dc.identifier.isiWOS:000284060200029-
dc.publisher.placeGermanyen_HK
dc.relation.projectInstitute of Molecular Functional Materials-
dc.identifier.scopusauthoridKwok, ECH=36652815700en_HK
dc.identifier.scopusauthoridChan, MY=7402597725en_HK
dc.identifier.scopusauthoridWong, KMC=8061067200en_HK
dc.identifier.scopusauthoridLam, WH=26642862800en_HK
dc.identifier.scopusauthoridYam, VWW=18539304700en_HK

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