摘要
Since the discovery of the Rochelle salt one century ago,ferroelectric materials have aroused extensive attention due to their strong response to various external fields such as electricity,force,heat,magnetism and light.1,2 Because of ferroelectric materials’excellent dielectric,piezoelectric and pyroelectric properties,modern ferroelectric devices are not only widely used in the field of information,but also blooming in the fields of environmental protection(electric card refrigeration,photocatalysis,piezoelectric catalysis,pyroelectric catalysis,etc.)and energy(solar cells,high-power energy storage,abnormal photovoltaic,etc.)in recent years.
