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Activation of hematite nanorod arrays for photoelectrochemical water splitting

2011-04-18, Morrish, Rachel, Rahman, Mahfujur, MacElroy, J. M. Don, Wolden, Colin Andrew

Hematite nanorod arrays were activated through proper control of annealing conditions. The 100-fold improvement in photocurrent was correlated with increased absorption and Sn doping from the tin oxide coated glass substrate. The low onset potential is attributed to a reduction in surface defects, while the morphology is credited for promoting tin diffusion and facilitating electron transport.