High Solar Flux Concentration Water Splitting with Hematite (α‐Fe2O3) Photoanodes. Issue 1 (9th November 2015)

• Record Type: Journal Article
• Authors: Segev, Gideon; Dotan, Hen; Malviya, Kirtiman Deo; Kay, Asaf; Mayer, Matthew T.; Grätzel, Michael; Rothschild, Avner
• Is Part Of: Advanced energy materials. Volume 6:Issue 1(2016)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2015-11-09
• Subjects: concentrated solar power -- hematite -- photocurrent -- photoelectrochemical cells -- photovoltage -- water splitting; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201500817
• Languages: English
• ISSNs: 1614-6832

Abstract

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.