[KNbO₃]_1-x[BaCo_1/2Nb_1/2O_3-]_x inorganic perovskite oxide coupled with TiO₂ nanorods photoelectrode: Toward efficient enhancement of photoelectrochemical properties

Inorganic perovskite oxide photosensitizer have shown versatile practical applications, owing to fruitful chemistries of photoelectric materials. This work reports a straightforward and general protocol via the use of Co/Ba co-doped KNbO3 (KBCNO) photosensitizer coupled with TiO2 nanorods to boost photoelectricity property. In the representative system, KBCNO with different doping concentrations and TiO2 nanorods were used as photo sensitizer and electron transfer layer, respectively. The synthetic process implicated that KBCNO with various concentration prepared by pulsed laser deposition technique and TiO2 nanorods were used as an active optical absorption layer and electrode, and the specific physicochemical, optical characterization and photo electrochemical (PEC) performance were all discussed in detail in the detection of the obtained photoelectrodes. This work is also an effective extension of previous studies on the category of inorganic perovskite oxide photosensitizers, which has not been reported by other research group. Given that KNbO3-based compounds can be easily obtained in abundance and variety, this work enjoys great advantages in PEC performance of numerous other inorganic perovskite oxide photosensitizer.