Thiocyanate-free ruthenium(II) sensitizers for dye-sensitized solar cells based on the cobalt redox couple (Articolo in rivista)

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  • Thiocyanate-free ruthenium(II) sensitizers for dye-sensitized solar cells based on the cobalt redox couple (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/cssc.201402030 (literal)
Alternative label
  • Wu K.-L.; Clifford J.N.; Wang S.-W.; Aswani Y.; Palomares E.; Lobello M.G.; Mosconi E.; De Angelis F.; Ku W.-P.; Chi Y.; Nazeeruddin M.K.; Gratzel M. (2014)
    Thiocyanate-free ruthenium(II) sensitizers for dye-sensitized solar cells based on the cobalt redox couple
    in ChemSusChem (Weinh., Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Wu K.-L.; Clifford J.N.; Wang S.-W.; Aswani Y.; Palomares E.; Lobello M.G.; Mosconi E.; De Angelis F.; Ku W.-P.; Chi Y.; Nazeeruddin M.K.; Gratzel M. (literal)
Pagina inizio
  • 2930 (literal)
Pagina fine
  • 2938 (literal)
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  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84906146425&partnerID=q2rCbXpz (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 7 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 9 (literal)
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  • 10 (literal)
Note
  • Scopu (literal)
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  • Department of Chemistry and Low Carbon Energy Research Center, National Tsing Hua University, Hsinchu 30013 (Taiwan); Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole polytechnique fédérale de Lausanne, 1015 Lausanne (Switzerland); Department Institute of Chemical Research of Catalonia (ICIQ), Avda. Països Catalans 16, 43007 Tarragona (Spain); Computational Laboratory for Hybrid/Organic, Photovoltaics (CLHYO), ISTM-CNR, Via Elce di Sotto 8, 06123, Perugia (Italy); Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P. O. Box 80203, Jeddah 21589 (Saudi Arabia) (literal)
Titolo
  • Thiocyanate-free ruthenium(II) sensitizers for dye-sensitized solar cells based on the cobalt redox couple (literal)
Abstract
  • Two thiocyanate-free ruthenium(II) sensitizers, TFRS-41 and TFRS-42, with distinctive dialkoxyphenyl thienyl substituents were successfully prepared and tested for potential applications in making dye-sensitized solar cells (DSCs). Subsequent device fabrication was conducted by using a [Co(bpy)3]2+/3+-based (bpy=2,2?-bipyridine) electrolyte, for which the best performance data, namely, JSC=13.11 mA cm-2, VOC=862 mV, fill factor=0.771, and ?=8.71 %, were recorded for the sensitizer TFRS-42 with a 2,6-dialkoxyphenyl substituent under AM 1.5G irradiation. The markedly higher Voc value was confirmed by the longer electron lifetime revealed in transient photovoltage (TPV) measurements versus the TFRS-1 sensitizer. In addition, DFT calculation and detailed first-principles computational analysis were conducted to provide a rationale for the observed trends in their photovoltaic performances and electron lifetimes, with reference to different performances exhibited by three thiocyanate-free sensitizers, TFRS-1, TFRS-41 and TFRS-42, versus Z907 reference. Through the proper control of peripheral substituents, the thiocyanate-free ruthenium(II)-based DSC sensitizers can positively influence the performances of DSCs, with better light-harvesting capability and suppressed charge recombination, for DSC cells fabricated by using a [Co(bpy)3]2+/3+-based electrolyte. (literal)
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