Wide preparation window and preparation method of spontaneous textured perovskite solar cell
A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems that the surface of perovskite cannot be textured and has no reliable method, so as to achieve the effect of improving fault tolerance and production efficiency
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[0020] Example 1
[0021] 1. The suede FTO glass is sonicated for 15 minutes with acetone, alcohol, and isopropanol in sequence, and then dried with nitrogen. The haze of the FTO glass is not less than 17%, and the sheet resistance is not more than 7omh / sq. Before use , Treated by UV ozone for 15 minutes.
[0022] 2. Prepare the electron transport layer. The material of the electron transport layer is titanium oxide with a thickness of 30nm. The specific step is to immerse the cleaned FTO glass in a 0.2M titanium tetrachloride aqueous solution, which is heated from room temperature to 70°C , The time lasts for 75 minutes, after which, rinse with deionized water, and then dry with nitrogen for use.
[0023] 3. Dissolve 3.507g of cesium iodide, 0.76g of methylamine bromide, 2.48g of lead bromide, 59.12g of lead iodide, and 19.74g of formamidine iodide into 100mL of mixed solvent to obtain a perovskite precursor solution. Among them, the mixed solvent is composed of 87.8 mL of N,N-dim...
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[0029] Example 2
[0030] 1. The textured FTO glass is sonicated with acetone, alcohol and isopropanol for 15 minutes, and then dried with nitrogen. The haze of the FTO glass is not less than 17%, and the sheet resistance is not more than 7omh / sq. Before use , Treated by UV ozone for 15 minutes.
[0031] 2. Preparation of the electron transport layer. The material of the electron transport layer is titanium oxide with a thickness of 30nm. The specific step is to immerse the cleaned FTO glass in a 0.2M titanium tetrachloride aqueous solution, which is heated from room temperature to 70°C , The time lasts for 75 minutes, after which, rinse with deionized water, and then dry with nitrogen for use.
[0032] 3. Dissolve 3.507g of cesium iodide, 0.76g of methylamine bromide, 2.48g of lead bromide, 59.12g of lead iodide, and 19.74g of formamidine iodide into 100mL mixed solvent to obtain a perovskite precursor solution. , The mixed solvent is composed of 95.24mL N,N-dimethylformamide and ...
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