Amorphous TiO 2 coatings stabilize Si, GaAs, and GaP photoanodes for efficient water oxidation

Although semiconductors such as silicon (Si), gallium arsenide (GaAs), and gallium phosphide (GaP) have band gaps that make them efficient photoanodes for solar fuel production, these materials are unstable in aqueous media. We show that TiO2 coatings (4 to 143 nanometers thick) grown by atomic laye... View More