Two-dimensional ferroelectrics have attracted extensive attention owing to their unique structure and extraordinary physical characteristics. In this work, α-In(2)Se(3)/CaAl(2)Se(4) heterostructure was designed, and the variations of its electronic structure and optoelectronic properties under the action of ferroelectric polarization directions, external strain, and applied electric field were comprehensively investigated by using first-principles calculations. The results show that the band alignment of heterostructure can be dynamically swit...
