Preparation and application of all-inorganic perovskite cell based on transition metal ion doping
A technology of transition metal ions and inorganic calcium, applied in circuits, photovoltaic power generation, electrical components, etc., can solve poor device stability, hinder the commercial application of perovskite solar cells, limit the photovoltaic performance of all-inorganic perovskite solar cells, etc. problems, to achieve the effect of suppressing the interface energy difference, reducing the number of grain boundaries and defect state density, and improving the photoelectric conversion efficiency
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[0023] The present invention based on transition metal ion doping CsPbBr 3 The preparation method of the all-inorganic perovskite solar cell comprises the following steps:
[0024] 1. Dissolve isopropyl titanate in ethanol to prepare a solution with a concentration of 0.5 mol / L; prepare 0.1 g / mL titanium dioxide slurry (solvent is water) by sol-hydrothermal method, and prepare a concentration of 0.04 mol / L Titanium tetrachloride aqueous solution; the preparation concentration is 1 mol / L lead bromide solution (lead bromide is dissolved in DMF), in which transition metal ions (Mn 2+ , Fe 2+ 、Co 2+ 、Ni 2+ 、Cu 2+ , Zn 2+ One or more of) and lead bromide in a molar ratio of 0.5:100, and a cesium bromide solution with a concentration of 0.07 mol / L (cesium bromide dissolved in methanol);
[0025] 2. Spin-coat 90 μL isopropyl titanate ethanol solution on the FTO conductive glass substrate to form a thin film, and then calcinate at 500 degrees for 2 hours to prepare a dense titan...
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