Modified perovskite-structure photoelectric conversion material and preparation method thereof
A perovskite structure, photoelectric conversion technology, applied in photovoltaic power generation, circuits, electrical components and other directions, can solve the problems of difficult to control distribution, low photoelectric conversion ability, easy to agglomerate, etc. Transmission efficiency, the effect of expanding the dispersion area
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Embodiment 1
[0034] Put the magnesium-aluminum hydrotalcite purchased from the market into an oven, and spread a layer of metal lead directly below it that does not contact it. There is an opening directly above the oven to allow oxygen to pass through, and the temperature in the oven is raised to 400 ° C. , and feed oxygen from the inlet directly above the oven, and maintain the above conditions for 4 hours to obtain the modified hydrotalcite oxide; then put the modified hydrotalcite oxide into the ethanol solution, and the modified hydrotalcite oxide and ethanol The mass ratio of the solution is 1:4, and the mass percentage of water in the ethanol solution is 5%, and it is airtightly left at room temperature for 24h, and thereafter in N 2 Dry under protection, put PbCl after drying 2 Soak in the γ-butyrolactone solution for 30min, PbCl in the solution 2 The concentration is 1.0mol / L, then add CH 3 NH 3 Soak in the γ-butyrolactone solution of Cl for 20min, CH in the solution 3 NH 3 T...
Embodiment 2
[0036] Put the magnesium aluminum hydrotalcite prepared by the co-precipitation method into an oven, and spread a layer of metallic lead directly below it that does not contact it. There is an opening directly above the oven to allow oxygen to pass through, and the temperature in the oven is raised to 400 ℃, and oxygen is introduced from the inlet directly above the oven, and the above conditions are maintained for 4 hours to obtain the modified hydrotalcite oxide; after that, the modified hydrotalcite oxide is put into the ethylene glycol solution, and the modified hydrotalcite is oxidized The mass ratio of substance and ethylene glycol solution is 1:3, and the mass percent of heavy water in ethylene glycol solution is 5%, and it is airtight and stands still at room temperature for 24h, and thereafter in N 2 Dry under protection, put PbCl after drying 2 Soak in the γ-butyrolactone solution for 30min, PbCl in the solution 2 The concentration is 1.5mol / L, then add CH 3 NH 3 ...
Embodiment 3
[0038] Put the magnesium-aluminum hydrotalcite purchased from the market into an oven, and spread a layer of metallic lead directly below it without contact with it. There is an opening directly above the oven to allow oxygen to flow in, and the temperature in the oven is raised to 500°C. , and feed oxygen from the inlet directly above the oven, and maintain the above conditions for 2 hours to obtain the modified hydrotalcite oxide; then put the modified hydrotalcite oxide into the ethanol solution, and the modified hydrotalcite oxide and ethanol The mass ratio of the solution is 1:4, and the mass percentage of water in the ethanol solution is 8%, and it is airtightly left at room temperature for 24h, and thereafter in N 2 Dry under protection, put in PbBr after drying 2 Soak in the γ-butyrolactone solution for 60min, PbBr in the solution 2 The concentration is 1.0mol / L, then add CH 3 NH 3 Soak in Br's γ-butyrolactone solution for 30min, CH in the solution 3 NH 3 The conc...
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