Fengyi Zhao

Plasmonic Nature of the “Blue State” in the WO3 Photoelectrode: Carrier Dynamics and Its Impact on Photoelectrochemical Water Oxidation

Abstract This study discusses the photophysical nature of the commonly observed “blue state” in WO3 photoanodes during photoelectrochemical water splitting. We demonstrate, using ultrafast transient absorption spectroscopy, that photoexcitation of the blue state of WO3, generated...