Heteroepitaxial growth and interface band alignment in a large-mismatch CsPbI₃/GaN heterojunction

Abstract

Heteroepitaxial growth of single-crystal CsPbI 3 nanoplatelets on GaN substrate leads to the formation of a type-II CsPbI 3 /GaN heterojunction that significantly enhances the separation and extraction of free carriers inside CsPbI 3 .