期刊
CHEMELECTROCHEM
卷 1, 期 10, 页码 1667-1671出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201402192
关键词
hydrogen evolution; LaFeO3; nanoparticles; perovskite electrodes; photoelectrochemistry
资金
- UK National Academy though the Newton International Fellows program
- Engineering and Physical Sciences Research Council [1096615, 1421449] Funding Source: researchfish
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 1V 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.
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