alexa Morphology and oxygen vacancy investigation of strontium titanate-based photo electrochemical cells

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Morphology and oxygen vacancy investigation of strontium titanate-based photo electrochemical cells

The external quantum efficiency (EQE) of such PECs mainly depends on the morphology and the amount of oxygen vacancies in SrTiO3 lattice. At first, the morphology is investigated, which can be adjusted by the particle size as well as the sinter temperature and time. Nanopowder-based PECs sintered above the starting sinter temperature indicate the best charge carrier transport and hence allow high EQEs. The sinter time influences the specific surface area, but not the EQE in this investigation.

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