http://www.cnr.it/ontology/cnr/individuo/prodotto/ID329382
Vapor phase processing of alpha-Fe2O3 photoelectrodes for water splitting: an insight into the structure/property interplay (Articolo in rivista)
- Type
- Label
- 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
- 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)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
- Autori stranieri (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- 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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