Journal
ADVANCED MATERIALS
Volume 25, Issue 1, Pages 125-131Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201202582
Keywords
anodization; Ta3N5 nanorods; photoelectrodes; hydrogen; water splitting
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Funding
- Japan Society for the Promotion of Science (JSPS) [23000009]
- Advanced Low Carbon Technology Research and Development Program (ALCA) of the Japan Science and Technology Agency (JST)
- Grants-in-Aid for Scientific Research [23000009, 10F00388] Funding Source: KAKEN
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A vertically aligned Ta3N5 nanorod photoelectrode is fabricated by through-mask anodization and nitridation for water splitting. The Ta3N5 nanorods, working as photoanodes of a photoelectrochemical cell, yield a high photocurrent density of 3.8 mA cm(-2) at 1.23 V versus a reversible hydrogen electrode under AM 1.5G simulated sunlight and an incident photon-to-current conversion efficiency of 41.3% at 440 nm, one of the highest activities reported for photoanodes so far.
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