High Solar Flux Concentration Water Splitting with Hematite (α-Fe2O3) Photoanodes

Gideon Segev; Hen Dotan; Kirtiman Deo Malviya; Asaf Kay; Matthew T. Mayer; Michael Grätzel; Avner Rothschild

doi:10.1002/aenm.201500817

High Solar Flux Concentration Water Splitting with Hematite (α-Fe₂O₃) Photoanodes

Gideon Segev, Hen Dotan, Kirtiman Deo Malviya, Asaf Kay, Matthew T. Mayer, Michael Grätzel, Avner Rothschild

Materials Science & Engineering

Technion - Israel Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

The water splitting performance of hematite photoanodes is explored under a wide range of light intensities. The photocurrent scales linearly and the photovoltage scales logarithmically with the intensity, showing steeper rate than in photovoltaics, probably due to the enhanced ratio between charge transfer and recombination at high intensities. Hence, light concentration serves as another handle to enhance the efficiency of hematite photoanodes.

Original language	English
Article number	1500817
Journal	Advanced Energy Materials
Volume	6
Issue number	1
DOIs	https://doi.org/10.1002/aenm.201500817
State	Published - 7 Jan 2016

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

concentrated solar power
hematite
photocurrent
photoelectrochemical cells
photovoltage
water splitting

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
General Materials Science

Access to Document

10.1002/aenm.201500817

Cite this

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title = "High Solar Flux Concentration Water Splitting with Hematite (α-Fe2O3) Photoanodes",

abstract = "The water splitting performance of hematite photoanodes is explored under a wide range of light intensities. The photocurrent scales linearly and the photovoltage scales logarithmically with the intensity, showing steeper rate than in photovoltaics, probably due to the enhanced ratio between charge transfer and recombination at high intensities. Hence, light concentration serves as another handle to enhance the efficiency of hematite photoanodes.",

keywords = "concentrated solar power, hematite, photocurrent, photoelectrochemical cells, photovoltage, water splitting",

author = "Gideon Segev and Hen Dotan and Malviya, \{Kirtiman Deo\} and Asaf Kay and Mayer, \{Matthew T.\} and Michael Gr{\"a}tzel and Avner Rothschild",

note = "Publisher Copyright: {\textcopyright} 2015 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim.",

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doi = "10.1002/aenm.201500817",

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T1 - High Solar Flux Concentration Water Splitting with Hematite (α-Fe2O3) Photoanodes

AU - Segev, Gideon

AU - Dotan, Hen

AU - Malviya, Kirtiman Deo

AU - Kay, Asaf

AU - Mayer, Matthew T.

AU - Grätzel, Michael

AU - Rothschild, Avner

PY - 2016/1/7

Y1 - 2016/1/7

N2 - The water splitting performance of hematite photoanodes is explored under a wide range of light intensities. The photocurrent scales linearly and the photovoltage scales logarithmically with the intensity, showing steeper rate than in photovoltaics, probably due to the enhanced ratio between charge transfer and recombination at high intensities. Hence, light concentration serves as another handle to enhance the efficiency of hematite photoanodes.

AB - The water splitting performance of hematite photoanodes is explored under a wide range of light intensities. The photocurrent scales linearly and the photovoltage scales logarithmically with the intensity, showing steeper rate than in photovoltaics, probably due to the enhanced ratio between charge transfer and recombination at high intensities. Hence, light concentration serves as another handle to enhance the efficiency of hematite photoanodes.

KW - concentrated solar power

KW - hematite

KW - photocurrent

KW - photoelectrochemical cells

KW - photovoltage

KW - water splitting

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U2 - 10.1002/aenm.201500817

DO - 10.1002/aenm.201500817

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SN - 1614-6832

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JO - Advanced Energy Materials

JF - Advanced Energy Materials

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M1 - 1500817

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