@article{9163,
  author = {N. Puthuval Prasad and S. Schneider and C. Maheu and C. Tian and J.P. Hofmann and J.M. Hensen and A. Bieberle-Hütter},
  title = {Enhancing Photocurrent of Bismuth Manganate Photoanodes with Nanoislands of Bismuth Oxide},
  abstract = {Photoelectrochemical (PEC) water splitting is a promising method for the energy transition. However, it is still hampered because the performance of the electrodes is too low. Herein, bismuth manganate (BMO) is investigated as a photoanode absorber material for PEC. BMO thin films are prepared by a sol–gel method with and without a bismuth oxide (BO) overlayer. It is found that the BO overlayer forms BO nanoislands after annealing. Under visible light illumination, BMO with BO nanoislands results in a nearly tenfold increase of the current density compared to pristine BMO at the same applied potential. This increased performance is related to a decrease in the charge transfer resistance and in the amount of recombinations based on the formation of a favorable heterojunction between BMO and BO. The application of overlayers on electrode materials in combination with suitable band alignment is an effective strategy to improve the performance of PEC electrodes.},
  year = {2025},
  journal = {ChemPhotoChem},
  volume = {9},
  pages = {2500003},
  doi = {10.1002/cptc.202500003},
  language = {eng},
}