Figure 2 | Schematic illustration of the mechanism by which quasi-BIC–enhanced absorption drives hot-carrier processes at the Au–TiO₂ interface to generate singlet oxygen. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 2 | Schematic illustration of the mechanism by which quasi-BIC–enhanced absorption drives hot-carrier processes at the Au–TiO₂ interface to generate singlet oxygen.

Caption

Figure 2 | Schematic illustration of the mechanism by which quasi-BIC–enhanced absorption drives hot-carrier processes at the Au–TiO₂ interface to generate singlet oxygen. a, Under quasi-BIC resonance, the electric field is strongly confined at the interface of the Au–TiO₂ nanostructure (colorbar indicates the normalized field intensity), facilitating interfacial charge separation and oxygen-activation reactions. b, Schematic band diagram and carrier dynamics: quasi-BIC–enhanced absorption elevates the hot-carrier energy distribution in the metal; a fraction of carriers surmount the Au–TiO₂ Schottky barrier and inject into TiO₂ to participate in interfacial reactions, ultimately driving the conversion of O₂ to ¹O₂.

Credit

Xing Fu et al.

Usage Restrictions

Credit must be given to the creator.

License

CC BY

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.