Passivating surface states on water splitting hematite photoanodes with alumina overlayers

Hematite is a promising material for inexpensive solar energy conversion via water splitting but has been limited by the large overpotential (0.5-0.6 V) that must be applied to afford high water oxidation photocurrent. This has conventionally been addressed by coating it with a catalyst to increase...

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Veröffentlicht in:	Chemical science (Cambridge) 2011-01, Vol.2 (4), p.737-743
Hauptverfasser:	mal, F L, Tetreault, N, Cornuz, M, Moehl, T, Graetzel, M, Sivula, K
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum oxide Catalysts Hematite Nanostructure Photocurrent Photoelectric effect Titanium dioxide Trapping
Online-Zugang:	Volltext
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