Preparation method of perovskite quantum dot composite
A technology of perovskite and quantum dots, applied in chemical instruments and methods, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as low efficiency and cumbersome methods, and achieve less operation steps and simple methods , optimize the effect of stability
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[0030] Example 1
[0031] Prepare CH 3 NH 3 PbBr 3 Perovskite quantum dot composite
[0032] S1, CH 3 NH 3 Br, PbBr 2 Mix with N,N-dimethylformamide, where CH 3 NH 3 Br and PbBr 2 The ratio of the amount of the substance is 5:1, N,N-dimethylformamide and PbBr 2 The mass ratio is 50:1. Mix and stir uniformly under the protection of argon to obtain a perovskite precursor mixture.
[0033] S2. Add polystyrene microspheres with a particle size of 3μm to the above-mentioned perovskite precursor mixture, where the mass of the polystyrene microspheres is proportional to CH 3 NH 3 Br and PbBr 2 The ratio of the total mass is 4:1. Mix and stir uniformly under the protection of argon to obtain a mixture of perovskite quantum dot polymer microspheres.
[0034] S3. Centrifuge the above-mentioned mixture of perovskite quantum dot polymer microspheres, discard the supernatant liquid, take out the precipitate and pour it into a glass dish, place the glass dish on a drying plate to heat, set the hea...
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[0037] Example 2
[0038] Preparation of CsPbBr 3 Perovskite quantum dot composite
[0039] S1, CsBr, PbBr 2 Mixed with dimethyl sulfoxide, of which, CsBr and PbBr 2 The ratio of the amount of the substance is 2:1, dimethyl sulfoxide and PbBr 2 The mass ratio is 100:1. Mix and stir uniformly under the protection of argon to obtain a perovskite precursor mixture.
[0040] S2. Add polystyrene microspheres with a particle diameter of 15μm to the above-mentioned perovskite precursor mixture, where the quality of the polystyrene microspheres is the same as that of CsBr and PbBr 2 The ratio of the total mass is 3:1. Mix and stir uniformly under the protection of argon to obtain a mixture of perovskite quantum dot polymer microspheres.
[0041] S3. Centrifuge the above-mentioned mixture of perovskite quantum dot polymer microspheres, discard the supernatant liquid, take out the precipitate and pour it into a glass dish, place the glass dish on a drying plate to heat, set the heating tempera...
Example Embodiment
[0044] Example 3
[0045] Prepare CH 3 NH 3 PbBr 3 Perovskite quantum dot composite
[0046] S1, CH 3 NH 3 Br, PbBr 2 Mix with N,N-dimethylformamide, where CH 3 NH 3 Br and PbBr 2 The ratio of the amount of the substance is 6:1, N,N-dimethylformamide and PbBr 2 The mass ratio is 200:1. Mix and stir uniformly under the protection of argon to obtain a perovskite precursor mixture.
[0047] S2. Add polymethyl methacrylate microspheres with a particle diameter of 5 μm to the above-mentioned perovskite precursor mixture, where the mass of the polymethyl methacrylate microspheres is related to CH 3 NH 3 Br and PbBr 2 The ratio of the total mass is 3:1. Mix and stir uniformly under the protection of argon to obtain a mixture of perovskite quantum dot polymer microspheres.
[0048] S3. Centrifuge the above-mentioned mixture of perovskite quantum dot polymer microspheres, discard the supernatant liquid, take out the precipitate and pour it into a glass dish, place the glass dish on a drying p...
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