| abstract |
The present application discloses a preparation method and a light-emitting device of a perovskite quantum dot-polymer composite and a wavelength conversion film. The preparation method of perovskite quantum dot-polymer composite includes: providing a precursor, including: a first precursor, the first precursor is composed of Rb + , Cs + , NR 4 + or [CH(NH 2 ) 2 At least one of ] + , and at least one of carboxylate anion or halogen anion, wherein, in the NR 4 + R is independently a hydrogen atom or a substituted or unsubstituted C 1 -C 10 straight chain or a branched alkyl group; a second precursor comprising a Pb halide, Ge halide, Si halide, Sn halide, or combinations thereof; and a polymer; at or above the polymer At the first temperature of the melting point, the precursors are allowed to mix, followed by a cooling step. The present application can effectively solve the problem of poor stability of the existing perovskite quantum dots. |