Abstract
AbstractMicro‐ring resonators are widely used in many fields due to their compact structure, high integration, and rich functions. In recent years, perovskite materials have been widely concerned because of their superior properties and various shapes of perovskite‐based optical resonators have been achieved. Despite the excellent photoelectric properties of perovskite materials, it is difficult to realize micro‐ring resonators based on perovskite materials due to its tendency to crystallize into cubic structures. Here, this problem is solved by a microstructure edge‐guided crystallization method to fabricate shape‐designable and size‐tunable methylammonium lead bromide (MAPbBr3) micro‐ring resonator arrays with high performance.
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