Rare earth element doped perovskite nanocrystalline, rare earth element doped perovskite nanocrystalline ink and preparation method of film
A rare earth element, perovskite technology, applied in nanotechnology, nano-optics, nanotechnology and other directions, can solve problems such as poor stability of visible light active photoluminescence
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[0024] see figure 1 , the invention provides a method for preparing perovskite nanocrystals doped with rare earth elements, comprising the steps of:
[0025] Step S1: mixing ammonium salt, acid, rare earth acetate and metal salt;
[0026] Step S2: heating to 80-500°C until each component is completely dissolved to form a solution;
[0027] Step S3: annealing the solution to 30-160° C. within time t1;
[0028] Step S4: annealing the solution to 0-29°C within time t2.
[0029] In step S1 of the present invention, the ammonium salt can be selected from but not limited to: methyl ammonium bromide, methyl ammonium iodide, dimethyl ammonium bromide, dodecyl trimethyl ammonium bromide or hexadecyl trimethylammonium bromide.
[0030] In step S1 of the present invention, the acid may be selected from but not limited to: hydrobromic acid or hydroiodic acid.
[0031] The rare earth element in the rare earth acetate can be selected from but not limited to: yttrium, thulium, europium,...
no. 1 Embodiment
[0039] Take methyl ammonium bromide as ammonium salt, weigh 0.053g, use yttrium acetate as rare earth acetate, weigh 0.01g, use lead acetate as metal salt, weigh 0.189g, use hydrobromic acid as acid, weigh 2.25ml, the above components were mixed. Heat the mixed components evenly to 205°C to dissolve all the components to form a solution; reduce the solution to 160°C within 0.01h; reduce the solution to 20°C within 0.01h to prepare rare earth element-doped Perovskite nanocrystals.
no. 2 Embodiment
[0041] Take methyl ammonium iodide as ammonium salt, weigh 0.51g, use yttrium acetate as rare earth acetate, weigh 0.05g, use lead acetate as metal salt, weigh 0.189g, use hydrobromic acid as acid, weigh 3ml, mix the above components. Heat the mixed components evenly to 210°C to dissolve all the components to form a solution; reduce the solution to 160°C within 0.2h; reduce the solution to 20°C within 1h to prepare calcium doped with rare earth elements Titanium nanocrystals.
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