Phys.org June 18, 2018
Using supercomputers to calculate the quantum energy states of four halide double perovskites, an international team of researchers (UK, USA – Cornell University) found that the double perovskites Cs2BiAgCl6 and Cs2BiAgBr6 are potentially promising materials for photo-catalytic water splitting. They would require controlling their surface termination to obtain energy levels appropriate for water splitting. The energy of the halogen P orbitals is found to control the conduction band level; therefore, the team proposes that mixed halides could be used to fine-tune the electronic affinity…read more. Open Access TECHNICAL ARTICLE
Novel, lead-free double perovskites as potential photocatalysts for solar water splitting Credit: George Volonakis