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Photoelectrochemical Properties of LaFeO 3 Nanoparticles
Author(s) -
Celorrio Verónica,
Bradley Kieren,
Weber Oliver J.,
Hall Simon R.,
Fermín David J.
Publication year - 2014
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201402192
Subject(s) - photocurrent , materials science , nanoparticle , band gap , photoelectrochemistry , nanotechnology , water splitting , chemical engineering , ionic bonding , optoelectronics , photocatalysis , catalysis , chemistry , electrochemistry , electrode , ion , biochemistry , organic chemistry , engineering
The photoelectrochemical properties of LaFeO 3 nanoparticles are discussed for the first time. Highly phase‐pure LaFeO 3 particles prepared by a novel ionic‐liquid‐based method are characterized by a (60±14) nm mean size and a band gap of (2.56±0.07) eV. Thin films deposited by screen printing exhibit photocurrent responses associated with hydrogen generation at potential up to 1 V more positive than the formal hydrogen potential. Analysis of the photocurrent responses as a function of photon flux and potential bias suggest that the hole‐collection efficiency at the back contact is in competition with interfacial water oxidation.