Junction behavior of n-Si photoanodes protected by thin Ni elucidated from dual working electrode photoelectrochemistry

• Published in: Energy & environmental science Vol. 10; no. 2; pp. 570 - 579
• Main Authors: Laskowski, Forrest A. L., Nellist, Michael R., Venkatkarthick, Radhakrishnan, Boettcher, Shannon W.
• Format: Journal Article
• Language: English
• Published: United States Royal Society of Chemistry 01.02.2017
• Subjects: Chemistry; Electrodes; Energy & Fuels; Engineering; Environmental Sciences & Ecology; Evolution; Oxygen; Photocurrent; Photoelectric effect; Photoelectrochemistry; Semiconductors; Solvents

Si is a desirable photoanode material for use in photoelectrochemical water-splitting devices. However, Si self-passivates during the oxygen evolution half reaction and requires a protection layer to maintain high photoanodic efficiency. Thin evaporated metallic Ni layers have been reported to prote...