Mechanochemistry enables optical-electrical multifunctional response and tunability in two-dimensional hybrid perovskites

Two-dimensional (2D) organic-inorganic hybrid perovskites (OIHPs) have attracted phenomenal attention because of their superior optoelectronic performances. The combination of their structural tunability and material stability offers an unprecedented opportunity to engineer materials with unique functionalities. However, developing a rapid and effective design method for introducing luminescence into dielectric switch and realizing controllable regulation has been an enormous challenge. Thus far, materials with tunable optoelectronic multichannel response have not been successfully implemented. In this study, we successfully developed a facile and effective mechanochemical method for realizing the integration and regulation of luminescence and dielectric switch in 2D perovskites, which is unprecedented for the design of dielectric switching materials. The mild external mechanical stimuli enabled the formation of Mn ion-doped 2D hybrid perovskites (Cyclopropylammonium) 2 Pb 1- x Mn x Br 4 with excellent dielectric switch and rapidly controllable luminescence of highly efficient blue light, white light, pink light, and orange light. This work will provide a new perspective on the rapid and effective design of multifunctional materials and can inspire the future development of low-cost and high-efficiency electronics.