Developing low-temperature solution epitaxy and elucidating its underlying mechanisms is highly desired for low-cost fabrication of single-crystal ferroelectric films. Here, the authors show that a polarization screening between ferroelectrics and substrates can tailor the interface energy and drive the solution epitaxy of polarization-gradient ferroelectric oxide films, demonstrating a remarkable photovoltaic effect.
- Chen Lin
- Zijun Zhang
- Gaorong Han
