The research team successfully constructed an advanced p-n junction composed of atomic-level Pt-doped CeO 2 and 2D metalloporphyrins metal-organic framework nanosheets (Pt-CeO 2 /CuTCPP(Fe)). Atomic-level Pt doping in CeO 2 leads to a transition from adsorbed oxygen (Fe-O A ) to lattice oxygen (Fe-O L ) at the interface, significantly reducing the carrier transport distance and boosting charge transfer efficiency. They achieved a 2.5-fold enhancement in photoelectric performance compared to the conventional CeO 2 /CuTCPP(Fe) system.
Key findings:
Implications:
This study provides a new strategy for the rational design of advanced heterojunction interfaces with optimized charge transfer pathways. The findings not only deepen our understanding of the relationship between interfacial chemical bonds and photoelectric performance, but also open up new possibilities for the development of high-performance PEC sensors for clinical diagnostics and biomedical research.
Funding:
This work was supported by the National Natural Science Foundation of China, the Natural Science Foundation of Hubei Province, and the Fundamental Research Funds for the Central Universities.
National Science Review
Experimental study