Fig. 3: In situ photodeposition experiments.
From: Bipolar charge collecting structure enables overall water splitting on ferroelectric photocatalysts
a–d Photoreduction on Au at +P BTO. a AFM topography of Au/BTO at +P before (left) and after (right) photodeposition. b LWF in the dark before (left) and after (right) photodeposition. The darker region indicates a higher LWF. c LWF in the light before (left) and after (right) photodeposition. Scale bar, 200 nm. d TEM image (left), DES image (right), and schematic illustrations of photoreduced Cr2O3 on Au at +P (bottom). e–h Photooxidation on Au at −P BTO. e AFM topography of Au/BTO at −P before (left) and after (right) photodeposition. f LWF in the dark before (left) and after (right) photodeposition. g LWF in the light before (left) and after (right) photodeposition. Scale bar, 200 nm. h SEM image (left), DES image (right), and schematic illustrations of photooxidized MnOx on Au at −P (bottom).
