Surface plasmon coupling regulated CsPbBr perovskite lasers in a metal-insulator-semiconductor structure.

A strong coupling effect often occurs between a metal and semiconductor, so micro/nano-lasers based on surface plasmons can break through the optical diffraction limit and realize unprecedented linear and nonlinear enhancement of optical processes. Hence, metal-insulator-semiconductor (M-I-S) structures based on perovskite materials were explored to design optoelectronic devices. Herein, we constructed an Ag/SiO/CsPbBr hybrid structure to generate surface plasmon coupled emission between the metal and CsPbBr perovskite.