Photoelectrochemical Properties of LaFeO3 Nanoparticles

Veronica Celorrio; Kieren A Bradley; Oliver J Weber; Simon R Hall; David J Fermín

doi:10.1002/celc.201402192

Photoelectrochemical Properties of LaFeO₃ Nanoparticles

Veronica Celorrio, Kieren A Bradley, Oliver J Weber, Simon R Hall, David J Fermín^*

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

52 Citations (Scopus)

Abstract

The photoelectrochemical properties of LaFeO₃ nanoparticles are discussed for the first time. Highly phase-pure LaFeO₃ 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.

Original language	English
Pages (from-to)	1667-1671
Number of pages	5
Journal	ChemElectroChem
Volume	1
Issue number	10
Early online date	2 Sept 2014
DOIs	https://doi.org/10.1002/celc.201402192
Publication status	Published - 14 Oct 2014

Keywords

Hydrogen evolution
LaFeO
Nanoparticles
Perovskite electrodes
Photoelectrochemistry

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title = "Photoelectrochemical Properties of LaFeO3 Nanoparticles",

abstract = "The photoelectrochemical properties of LaFeO3 nanoparticles are discussed for the first time. Highly phase-pure LaFeO3 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.",

keywords = "Hydrogen evolution, LaFeO, Nanoparticles, Perovskite electrodes, Photoelectrochemistry",

author = "Veronica Celorrio and Bradley, {Kieren A} and Weber, {Oliver J} and Hall, {Simon R} and Ferm{\'i}n, {David J}",

year = "2014",

month = oct,

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doi = "10.1002/celc.201402192",

language = "English",

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T1 - Photoelectrochemical Properties of LaFeO3 Nanoparticles

AU - Celorrio, Veronica

AU - Bradley, Kieren A

AU - Weber, Oliver J

AU - Hall, Simon R

AU - Fermín, David J

PY - 2014/10/14

Y1 - 2014/10/14

N2 - The photoelectrochemical properties of LaFeO3 nanoparticles are discussed for the first time. Highly phase-pure LaFeO3 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.

AB - The photoelectrochemical properties of LaFeO3 nanoparticles are discussed for the first time. Highly phase-pure LaFeO3 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.

KW - Hydrogen evolution

KW - LaFeO

KW - Nanoparticles

KW - Perovskite electrodes

KW - Photoelectrochemistry

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U2 - 10.1002/celc.201402192

DO - 10.1002/celc.201402192

M3 - Article (Academic Journal)

AN - SCOPUS:84923179814

SN - 2196-0216

VL - 1

SP - 1667

EP - 1671

JO - ChemElectroChem

JF - ChemElectroChem

IS - 10

ER -

Photoelectrochemical Properties of LaFeO₃ Nanoparticles

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Photoelectrochemical Properties of LaFeO3 Nanoparticles

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Photoelectrochemical Properties of LaFeO₃ Nanoparticles