Schottky type perovskite photoelectric detector and preparation method thereof
A photodetector, perovskite technology, applied in photovoltaic power generation, electric solid-state devices, semiconductor/solid-state device manufacturing, etc., to achieve the effect of suppressing excessive dark current, reducing dark current and ion migration, and suppressing dark current drift
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Embodiment example 1
[0028] (1) Prepare 15% PI (polyimide) solution, weigh 0.57g of biphenyltetracarboxylic dianhydride and 0.2g of p-phenylenediamine in turn, add it to 5mL of N-methylpyrrolidone (NMP), stir to dissolve .
[0029] (2) In cesium lead bromide (CsPbBr 3 ) spin coating PI (polyimide) solution on perovskite single crystal, after spin coating, cesium lead bromide (CsPbBr 3 ) The perovskite single crystal was placed on a hot stage and heated at 80° C. for 10 minutes to obtain a PI film with a thickness of 300 nm.
[0030] (3) Evaporate a silver electrode on the PI (polyimide) film.
[0031] (4) In cesium lead bromide (CsPbBr 3 ) gold electrode on the other side of the perovskite single crystal.
Embodiment example 2
[0033] (1) Prepare 5% PI (polyimide) solution, weigh 0.19g of biphenyltetracarboxylic dianhydride and 0.07g of p-phenylenediamine in turn, add it to 5mL of N-methylpyrrolidone (NMP), stir to dissolve .
[0034] (2) In cesium lead bromide (CsPbBr 3 ) perovskite multi-chip spin coating PI (polyimide) solution, after spin coating, cesium lead bromide (CsPbBr 3) The perovskite multi-chip was placed on a hot stage and heated at 80°C for 10 minutes to obtain a PI film with a thickness of 20nm.
[0035] (3) Evaporate a silver electrode on the PI (polyimide) film.
[0036] (4) In cesium lead bromide (CsPbBr 3 ) on the other side of the perovskite multi-wafer by evaporating gold electrodes.
Embodiment example 3
[0038] (1) Prepare 15% PI (polyimide) solution, weigh 0.57g of biphenyltetracarboxylic dianhydride and 0.2g of p-phenylenediamine in turn, add them to 5mL of dimethylformamide (DMF), stir to dissolve .
[0039] (2) In cesium lead bromide (CsPbBr 3 ) spin coating PI (polyimide) solution on perovskite single crystal, after spin coating, cesium lead bromide (CsPbBr 3 ) The perovskite single crystal was placed on a hot stage and heated at 80° C. for 10 minutes to obtain a PI film with a thickness of 300 nm.
[0040] (3) Evaporate a silver electrode on the PI (polyimide) film.
[0041] (4) In cesium lead bromide (CsPbBr 3 ) gold electrode on the other side of the perovskite single crystal.
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