Experimental study demonstrates high stability of unmodified GaAs photocathodes during acidic hydrogen evolution, suggesting potential for durable solar fuel devices.
GaAs photocathodes are intrinsically stabilized by surface As during hydrogen evolution at −15 mA cm ⁻² in acid; etching at <0.5 nm h ⁻¹ while maintaining performance.
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Young et al. (2015) studied this question.
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