A Monolithically Integrated Gallium Nitride Nanowire/Silicon Solar Cell Photocathode for Selective Carbon Dioxide Reduction to Methane | Zendy

Wang Yichen | Zendy; Fan Shizhao | Zendy; AlOtaibi Bandar | Zendy; Wang Yongjie | Zendy; Li Lu | Zendy; Mi Zetian | Zendy

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A Monolithically Integrated Gallium Nitride Nanowire/Silicon Solar Cell Photocathode for Selective Carbon Dioxide Reduction to Methane

Author(s) -

Wang Yichen,

Fan Shizhao,

AlOtaibi Bandar,

Wang Yongjie,

Li Lu,

Mi Zetian

Publication year - 2016

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201601642

Subject(s) - photocathode , materials science , optoelectronics , nanowire , solar cell , gallium nitride , silicon dioxide , silicon , electrochemical reduction of carbon dioxide , nanotechnology , catalysis , chemistry , carbon monoxide , physics , layer (electronics) , quantum mechanics , metallurgy , electron , biochemistry

A gallium nitride nanowire/silicon solar cell photocathode for the photoreduction of carbon dioxide (CO 2 ) is demonstrated. Such a monolithically integrated nanowire/solar cell photocathode offers several unique advantages, including the absorption of a large part of the solar spectrum and highly efficient carrier extraction. With the incorporation of copper as the co‐catalyst, the devices exhibit a Faradaic efficiency of about 19 % for the 8e − photoreduction to CH 4 at −1.4 V vs Ag/AgCl, a value that is more than thirty times higher than that for the 2e − reduced CO (ca. 0.6 %).

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