4 research outputs found
A three-dimensional hexagonal fluorine-doped tin oxide nanocone array: a superior light harvesting electrode for high performance photoelectrochemical water splitting
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Photonic nanostructures hold great promise in promoting light harvesting. Here </div>
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we report the first design and construction of a three-dimensional (3D) hexagonal </div>
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nanocone array of fluorine-doped tin oxide (FTO) on glass as an excellent electrode </div>
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for photoelectrochemical (PEC) water splitting. The PEC current density with </div>
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suitably deposited Ti-doped hematite at 1.23 V vs. the reversible hydrogen electrode </div>
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(RHE) was increased by 86% to 2.24 +/- 0.02 mA cm(-2) compared to that with the </div>
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planar counterpart, mainly ascribable to the special light harvesting effect and the </div>
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electrode surface area provided by 3D FTO. Upon the embedment of a gold layer to </div>
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concentrate the incident light onto the hematite layer and the deposition of the </div>
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Co-Pi catalyst with a modified procedure, the photocurrent experienced a large </div>
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cathodic shift of onset potential by 360 mV and soared to a high value of 3.39 +/- </div>
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0.01 mA cm(-2) (at 1.23 V), yielding a power conversion efficiency of 0.70% at a </div>
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potential as low as 0.88 V vs. RHE. </div