Efficient and stable perovskite solar battery and preparation method thereof
A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of poor cell efficiency and stability, easy migration of ions, etc., and achieve improved photogenerated carrier transport performance and stability, good crystallinity, and low cost. low effect
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[0028] Example 1
[0029] Spin-coating anhydrous isopropyl titanate solution with a concentration of 0.15 mol / L on the FTO conductive glass, rotating at 4000 rpm for 40 seconds, and then annealing at 500°C for 30 minutes; then spin-coating titanium dioxide nanoparticles ( Dyesol, 18-NRT, diluted with anhydrous ethanol at a mass ratio of 1:6, fully stirred) as the mesoporous layer, the rotation speed is 4000 rpm, the time is 40 seconds, and then 500 ℃ annealing for 30 minutes; further, the above The titanium dioxide layer was immersed in a 0.1 mol / L titanium tetrachloride aqueous solution at 70°C for 30 minutes, and then washed with deionized water and absolute ethanol, and then annealed at 500°C for 30 minutes; the content of 10 mg / ml terephthalic acid The one-step perovskite precursor solution (462 mg of lead iodide, 159 mg of methyl ammonium iodide, 80 μl of DMSO and 650 μl of DMF) was spin-coated on the titanium oxide layer prepared in the previous step at a speed of 4000 rpm ...
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