Dynamics of photogenerated holes in surface modified α-Fe2O3 photoanodes for solar water splitting - Barroso, M; Mesa, CA; Pendlebury, SR; Cowan, AJ; Hisatomi, T; Sivula, K; Graetzel, M; Klug, DR; Durrant, JR (PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2012)