A kind of perovskite photoelectric conversion composite material sol and preparation method thereof
A composite material and perovskite-type technology, which is applied in the field of perovskite-type photoelectric conversion composite material sol and its preparation, can solve the problem that cannot meet the engineering coating requirements of the light-absorbing layer of perovskite solar cells, perovskite photoelectric Absorbing materials with poor film-forming properties and few types of organic cations, etc., to achieve good electron or hole carrier transport performance, high light and thermal stability, and improve film-forming properties
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Embodiment 1
[0036] Add 365.5 g (5 mol) of dimethylformamide, 30.7 g (0.12 mol) of hydroiodic acid with a mass percent concentration of 50% and 46.1 g (0.1 mol) of lead iodide in a stirred 500 mL glass reactor. Stir at 60-80°C for 2h until completely dissolved, then add 4.96g (0.05mol) of succinimide, continue stirring for 24h to obtain C 4 h 4 o 2 NH 2 PB 3 solution; then add 5.18g (0.05mol) of methanol solution of methylamine with a mass percent concentration of 30%, continue to stir and react for 12 h, cool to room temperature, and obtain C 4 h 4 o 2 NH 2 PB 3 and CH 3 NH 3 PB 3 Mix light absorbing solution.
[0037] Add 29.2 g (0.05 mol) of magnesium methoxide solution with a mass percent concentration of 20% to the above reaction solution, and react the magnesium methoxide with water for 4 hours to form a magnesium oxide nanoparticle sol with a particle size of 5 nm. Continue to add absolute ethanol to PbI 2 Saturated and precipitated, the sol was slightly turbid, and the...
Embodiment 2
[0039] Add 365.5 g (5 mol) of dimethylformamide, 30.7 g (0.12 mol) of hydroiodic acid with a mass percent concentration of 50% and 46.1 g (0.1 mol) of lead iodide in a stirred 500 mL glass reactor. Stir at 60-80°C for 2h until completely dissolved, then add 2.94g (0.02mol) of phthalimide, continue stirring for 24h to obtain C 8 h 4 o 2 NH 2 PB 3 solution; then add 8.288g (0.08mol) of methanol solution of methylamine with a mass percent concentration of 30%, continue to stir and react for 12 h, cool to room temperature, and obtain C 8 h 4 o 2 NH 2 PB 3 and CH 3 NH 3 PB 3 Mix light absorbing solution.
[0040] Add 20.4g (0.02mol) of aluminum isopropoxide solution with a mass percent concentration of 20% to the above reaction solution, and the aluminum isopropoxide reacts with water in the solution for 4 hours to form a sol of nano-alumina particles with a particle size of 10nm. Continue to add absolute ethanol to PbI 2 Saturated and precipitated, the sol was slightl...
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