Preparation method of white light perovskite quantum chip
A technology of quantum sheet and perovskite, which is applied in the field of preparation of perovskite quantum sheet, can solve the problems of high cost, complex multi-layer light-emitting layer process, white light shift, etc., and achieve the effect of low cost and abundant raw materials
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Embodiment 1
[0024] (1) Cs-OA: 0.40 g of cesium carbonate, 1 mL of oleic acid, and 10 mL of octadecene were mixed in a three-necked flask, heated and stirred at 120 °C for 30 min until a clear solution was obtained, then cooled to room temperature to obtain a Cs-OA precursor.
[0025] (2) Mix 5mL ODE and 0.069g PbBr 2 Mix and place in a 100mL three-necked flask. Then the solution was heated to 120° C. and vacuumized for 1 h to remove water and oxygen in the reaction system.
[0026] (3) Inject 0.5 mL of OLA and 0.5 mL of OA into the above solution, while cooling down to 90° C., and inject 0.4 mL of Cs-OA. After reacting for one minute, the three-necked flask was cooled in a water bath to terminate the reaction.
[0027] (4) Centrifuge the synthesized solution at 15000rpm for 5min, take the precipitate and add it to toluene and methyl acetate (ratio 1:2) for purification and separation to obtain CsPbBr 3 Quantum flake mother liquor. Divide the synthetic mother liquor into two parts: ①Cs...
Embodiment 2
[0030] (1) Cs-OA: 0.40 g of cesium carbonate, 1 mL of oleic acid, and 10 mL of liquid paraffin were mixed in a three-necked flask, heated and stirred at 100 °C for 30 min until a clear solution was obtained, then cooled to room temperature to obtain the Cs-OA precursor.
[0031] (2) Mix 5mL ODE and 0.069g PbBr 2 Mix and place in a 100mL three-necked flask. Then the solution was heated to 100° C. and vacuumized for 1 h to remove water and oxygen in the reaction system.
[0032] (3) 0.5 mL of octylamine and 0.5 mL of octanoic acid were injected into the above solution, while the temperature was lowered to 80° C., and 0.4 mL of Cs-OA was injected. After reacting for one minute, the three-necked flask was cooled in a water bath to terminate the reaction.
[0033] (4) Centrifuge the synthesized solution at 15000rpm for 5min, take the precipitate and add it to toluene and methyl acetate (ratio 1:2) for purification and separation to obtain CsPbBr 3 Quantum flake mother liquor. D...
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