Perovskite quantum dot and preparation method and application thereof

The invention provides a perovskite quantum dot and a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing a pretreating agent with a mesoporous material to obtain a pretreated mesoporous material; (2) mixing a perovskite quantum dot precursor, the pretreated mesoporous material and nano inorganic particles, and sintering to obtain the perovskite quantum dots, wherein the perovskite quantum dot precursor comprises a perovskite raw material precursor and/or a perovskite bulk phase material. The nano inorganic particles are added in the mixing process of the mesoporous material and the precursor of the quantum dot, so that the adhesion problem occurring in the sintering process of preparing the quantum dot by using the mesoporous material as a template is improved, the raw materials are distributed more uniformly in the sintering process, adhesion is not easy to occur when the molecular sieve collapses, and the service life of the molecular sieve is prolon