Positive onset potential and stability of Cu 2 O-based photocathodes in water splitting by atomic layer deposition of a Ga 2 O 3 buffer layer

Li, Changli; Hisatomi, Takashi; Watanabe, Osamu; Nakabayashi, Mamiko; Shibata, Naoya; Domen, Kazunari; Delaunay, Jean‐Jacques

doi:10.1039/c5ee00250h

Public

Positive onset potential and stability of Cu 2 O-based photocathodes in water splitting by atomic layer deposition of a Ga 2 O 3 buffer layer

Published in Energy & Environmental Science • Jan 1, 2015

Authors:

Changli Li

Takashi Hisatomi

Osamu Watanabe

Abstract

The improved energy band alignment of Pt/TiO 2 /Ga 2 O 3 /Cu 2 O structure results in a positive onset potential of ∼1 V vs. RHE and a stable cathodic photocurrent under appropriate TiO 2 deposition temperature.

Subject

Atomic layer deposition

Photocurrent

Deposition (geology)

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