Effect of ferroelectric polarization on solar-based photocatalytic activities in multiferroic-metal conjugation
This project investigates the influence of ferroelectric polarization in promoting the charge separation/transfer of photo-excited electron-hole pairs, hence a substantial contribution to the overall photocatalytic water splitting. Solar-driven photocatalysis has drawn great attention recently due to its significant role in solving energy and environmental issues related to wastewater treatment and purification.
The objective of the project is to design multiferroic-metal architecture (Figure 1), by taking advantage of the ferroelectric properties in multiferroic, to control the related charge and lattice orders within the strong correlated system. In this project, we use thin film approach to achieve a better understanding of the mechanism of interfacial charge transfer in a solar-based redox reaction.
Effect of the substrate termination is also issue of interest because substrate with different terminated surfaces gives different polarities, which might affect the intrinsic ferroelectricity of multiferroic film.
Upon successful completion of the project, the expected output is the establishment of thin film approach for photocatalytic water splitting. The significance output is an understanding of the interplay between charge, lattice, and ferroelectricity in the correlated multiferroic/metal hetero-junction.