A preparation method of a stable perovskite solar cell light absorbing layer
A light-absorbing layer and solar cell technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of unstable surface and uneven roughness of the perovskite light-absorbing layer, achieve good chemical stability, and overcome surface roughness Inhomogeneity, the effect of simple preparation process
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Embodiment 1
[0037] PbI 2 Reagent 46.1g (100mmol) and CH 3 NH 3 Add 15.9g (100mmol) of reagent I into 200g dimethylformamide solvent, stir at 60-70°C for 12 h to obtain CH 3 NH 3 PB 3 Clear solution.
[0038] Mix 0.89g (5mmol) of methyltriethoxysilane, 16g (350mmol) of absolute ethanol, and 0.75g (40mmol) of deionized water, and then add 0.25g (1mmol) of hydriodic acid aqueous solution with a concentration of 50% by mass , make the pH of the solution 2-3, carry out the hydrolysis reaction at 60-70° C. for 4 hours, and obtain a 5% mass percent concentration of organosilicon nanoparticle dispersant solution. Add it to CH with stirring 3 NH 3 PB 3 CH containing silicone dispersant is obtained in solution 3 NH 3 PB 3 Clear solution. Then add 1 g of n-butyltin ethanol solution with a concentration of 5% by mass, add anhydrous ethanol solvent to adjust the solution quality to 310 g, and filter the solution to obtain a light-absorbing layer coating solution, which is transferred to a ...
Embodiment 2
[0041] PbI 2 Reagent 46.1g (100mmol) and CH 3 NH 3 Add 15.9g (100mmol) of reagent I into 200g dimethylformamide solvent, stir at 60-70°C for 12 h to obtain CH 3 NH 3 PB 3 Clear solution.
[0042] Mix 0.83g (4mmol) of tetraethoxysilane, 0.18g (1mmol) of methyltriethoxysilane, 16g (350mmol) of absolute ethanol, and 0.75g (40mmol) of deionized water, and then add 50% by mass 0.25 g (1 mmol) of aqueous solution of hydroiodic acid, the pH of the solution is 2-3, and the hydrolysis reaction is carried out at 30-40° C. for 4 hours to obtain an organic silicon nanoparticle dispersant solution. Add it to CH with stirring 3 NH 3 PB 3 CH containing silicone dispersant is obtained in solution 3 NH 3 PB 3 Clear solution. Anhydrous ethanol solvent was added to adjust the solution to 310 g, and the solution was precisely filtered to obtain a light-absorbing layer coating solution, which was transferred to a black plastic bottle for storage.
[0043] Use a needle tube to drop the...
Embodiment 3
[0045] PbI 2 Reagent 46.1g (100mmol) and CH 3 NH 3 Add 15.9g (100mmol) of reagent I into 200g dimethylformamide solvent, stir at 60-70°C for 12 h to obtain CH 3 NH 3 PB 3 Clear solution.
[0046] Mix 0.83g (4mmol) of tetraethoxysilane, 0.25g (1mmol) of silicone coupling agent KH570, 16g (350mmol) of absolute ethanol, and 0.75g (40mmol) of deionized water, and then add 50% concentration by mass 0.25 g (1 mmol) aqueous solution of hydroiodic acid, the pH of the solution is set to 2-3, and the hydrolysis reaction is carried out at 30-40° C. for 4 hours to obtain an organic silicon nanoparticle dispersant solution. Add it to CH with stirring 3 NH 3 PB 3 CH containing silicone dispersant is obtained in solution 3 NH 3 PB 3 Clear solution. Anhydrous ethanol solvent was added to adjust the solution to 310 g, and the solution was precisely filtered to obtain a coating solution for the light-absorbing layer.
[0047] Use a needle tube to drop the light-absorbing layer coat...
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