Stabilizing Porous-Silicon Photocathodes Via Nickel/Nickel Oxide Co-Catalyst and Benzotriazole Passivation

ES Materials & Manufacturing, 2025

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DOI 10.30919/mm1829
Data confidence 85 high
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Abstract

Efficient photoelectrochemical water splitting requires stable photoelectrodes that combine strong light harvesting with low-resistance interfaces to facilitate separation of photogenerated charges.Texturing silicon into a 1µm porous ("black Si") surface layer minimizes front-surface reflection and enhances light trapping.Building on this concept, we fabricate a BTA/NiOx-Ni/pSi photocathode in