Organic-inorganic hybrid perovskite material for temperature detection
A perovskite material and inorganic technology, applied in the direction of physical/chemical change thermometers, thermometers, luminescent materials, etc., to achieve high resolution and sensitive response
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[0030] The preparation process of the organic-inorganic hybrid perovskite material is illustrated by taking the reprecipitation method as an example, including the following steps:
[0031] (1) Dissolve the organic amine in ethanol (purity ≥99.7%), prepare a solution with a volume ratio of 50%, stir for 10 minutes until uniform, add hydrohalic acid to the above solution while stirring in an ice-water bath environment, The molar ratio of the addition is: organic amine: hydrohalic acid = 1: (1 ~ 3), to ensure that the organic amine can react completely, stir for 2 hours in an ice-water bath environment to obtain a clear solution, and use a rotary evaporator at 60°C,- Evaporate under the pressure of 0.1MPa and remove the solvent to obtain the crystalline powder of organic ammonium halide. Wash the crystalline powder of organic ammonium halide with ether three times, filter, and dry in a vacuum drying oven at 35°C and -0.1MPa for 12 hours to obtain Organic ammonium halide powder, whe...
Embodiment 1
[0046] Taking the spin coating method to prepare organic-inorganic hybrid perovskite materials as an example, the organic-inorganic hybrid perovskite (C 4 H 9 NH 2 ) 2 SnI 4 For temperature detection, the steps are as follows:
[0047] Step 1. Preparation of n-butylammonium iodide salt
[0048] Dissolve n-butylamine (purity 99.5%) in 15ml ethanol (purity ≥99.7%) to prepare a solution with a volume ratio of 50%. Stir for 10 minutes until uniform. In an ice-water bath environment, press n-butylamine while stirring. The molar ratio of hydroiodic acid and hydroiodic acid (purity: 57%) is 1:1.3. Add hydroiodic acid dropwise and stir for 2 hours in an ice-water bath environment to obtain a clear solution. Use a rotary evaporator to evaporate and remove the solvent at 60°C and -0.1MPa pressure. , To obtain the crystalline powder of n-butylammonium iodide salt, wash the crystalline powder of n-butylammonium iodide salt with ether (purity 99.5%) three times, filter, and dry in a vacuum dryi...
Embodiment 2
[0056] Taking the preparation of organic-inorganic hybrid perovskite material by reprecipitation method as an example, the organic-inorganic hybrid perovskite (C 12 H 25 NH 2 ) 2 PbI 4 For temperature detection, the steps are as follows:
[0057] Step 1. Preparation of dodecylammonium iodide
[0058] Dissolve dodecylamine (purity 99.5%) in 15ml ethanol (purity ≥99.7%) to prepare a solution with a volume ratio of 50%. Stir for 10 minutes until uniform. In an ice-water bath environment, press dodecylamine while stirring The molar ratio of hydroiodic acid and hydroiodic acid (purity: 57%) is 1:1.3. Add hydroiodic acid dropwise and stir for 2 hours in an ice-water bath environment to obtain a clear solution. Use a rotary evaporator to evaporate and remove the solvent at 60°C and -0.1MPa pressure. , The crystalline powder of dodecaammonium iodide salt is obtained, and the crystalline powder of dodecaammonium iodide salt is washed three times with ether (purity: 99.5%), filtered, and dri...
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