Vapor phase processing of alpha-Fe2O3 photoelectrodes for water splitting: an insight into the structure/property interplay (Articolo in rivista)

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  • Vapor phase processing of alpha-Fe2O3 photoelectrodes for water splitting: an insight into the structure/property interplay (Articolo in rivista) (literal)
Anno
  • 2015-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/acsami.5b00919 (literal)
Alternative label
  • Warwick M.E.A; KaunistoK. K.; Barreca D.; Carraro G.; Gasparotto A.; Maccato C.; Bontempi E.; Sada C.; Ruoko T.-P.; Turner S.; Van Tendeloo G. (2015)
    Vapor phase processing of alpha-Fe2O3 photoelectrodes for water splitting: an insight into the structure/property interplay
    in ACS applied materials & interfaces (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Warwick M.E.A; KaunistoK. K.; Barreca D.; Carraro G.; Gasparotto A.; Maccato C.; Bontempi E.; Sada C.; Ruoko T.-P.; Turner S.; Van Tendeloo G. (literal)
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  • Autori stranieri (literal)
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  • http://pubs.acs.org/doi/abs/10.1021/acsami.5b00919 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1,2,4-6 : Department of Chemistry, Padova University and INSTM, 35131 Padova, Italy / 2,9 : Department of Chemistry and Bioengineering, Tampere University of Technology, 33101 Tampere, Finland / 3 : CNR-IENI, Department of Chemistry, Padova University and INSTM, 35131 Padova, Italy / 7 : Chemistry for Technologies Laboratory, University of Brescia, 25123 Brescia, Italy / 8 : Department of Physics and Astronomy, Padova University, 35131 Padova, Italy / 10,11 : EMAT, University of Antwerp, 2020 Antwerpen, Belgium (literal)
Titolo
  • Vapor phase processing of alpha-Fe2O3 photoelectrodes for water splitting: an insight into the structure/property interplay (literal)
Abstract
  • Harvesting radiant energy to trigger water photoelectrolysis and produce clean hydrogen is receiving increasing attention in the search of alternative energy resources. In this regard, hematite (?-Fe2O3) nanostructures with controlled nano-organization have been fabricated and investigated for use as anodes in photoelectrochemical (PEC) cells. The target systems have been grown on conductive substrates by plasma enhanced-chemical vapor deposition (PE-CVD) and subjected to eventual ex-situ annealing in air to further tailor their structure and properties. A detailed multi-technique approach has enabled to elucidate the interrelations between system characteristics and the generated photocurrent. The present ?-Fe2O3 systems are characterized by a high purity and hierarchical morphologies consisting of nanopyramids/organized dendrites, offering a high contact area with the electrolyte. PEC data reveal a dramatic response enhancement upon thermal treatment, related to a more efficient electron transfer. The reasons underlying such a phenomenon are elucidated and discussed by transient absorption spectroscopy (TAS) studies of photogenerated charge carrier kinetics, investigated on different time scales for the first time on PE-CVD Fe2O3 nanostructures. (literal)
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