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Photoelectrochemical response of Fe2O3 films reinforced with BiFeO3 nanofibers

Published online by Cambridge University Press:  05 June 2018

Albert Queraltó Open the ORCID record for Albert Queraltó [Opens in a new window]  and
Sanjay Mathur
Albert Queraltó
Affiliation:
Institute of Inorganic Chemistry, University of Cologne, Greinstrasse 6, 50939 Cologne, Germany
Sanjay Mathur*
Affiliation:
Institute of Inorganic Chemistry, University of Cologne, Greinstrasse 6, 50939 Cologne, Germany
*
Address all correspondence to Prof. Dr. Sanjay Mathur at [email protected]
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Abstract

BiFeO3 (BFO) p-type semiconducting nanofibers were deposited on fluorine-doped SnO2 substrates by a combination of electrospinning (BiFeO3) and spin-coating (Fe2O3) procedures. Photocurrent density values of BFO nanofibers which increased with the annealing temperature to values six times larger were obtained. Different amounts of BFO nanofibers (5, 10, and 25 wt%) were also integrated into α-Fe2O3 films. The photocurrent density of the α-Fe2O3/BFO nanofiber films had the highest value for a 10 wt% BFO nanofibers. The anisotropy in charge transport due to the underlying nanofibrous pathways which prevented the charge carrier recombination was the main cause for the enhancement of the photocurrent density.

Type
Research Letters
Information
MRS Communications , Volume 8 , Issue 3 , September 2018 , pp. 1211 - 1215
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Copyright
Copyright © Materials Research Society 2018 

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