Band-tail states meditated visible-light-driven overall water splitting in Y<sub>2</sub>Ti<sub>2</sub>O<sub>5</sub>S<sub>2</sub> photocatalyst
Ronghua Li, Zhengdi Zha, Yanning Zhang, Minji Yang, Lihua Lin, Qian Wang, Takashi Hisatomi, Mamiko Nakabayashi, Naoya Shibata, Kazunari Domen, Yanbo Li
Abstract
Photoluminescence studies reveal the existence and double-edged sword role of band-tail states in the Y 2 Ti 2 O 5 S 2 photocatalyst, which prolong carrier lifetime, but prevent effective separation of the photogenerated electron–hole pairs.
Topics & Concepts
PhotoluminescencePhotocatalysisVisible spectrumMaterials scienceBand gapSWORDWater splittingAtomic physicsPhysicsOptoelectronicsChemistryCatalysisBiochemistryComputer scienceOperating systemAdvanced Photocatalysis TechniquesPerovskite Materials and ApplicationsElectronic and Structural Properties of Oxides