A kind of low grain boundary perovskite crystal film, battery and preparation method thereof
A perovskite battery and perovskite technology, applied in semiconductor/solid-state device manufacturing, circuits, photovoltaic power generation, etc., can solve the problems of high energy consumption and cost, achieve smooth surface, simplify complex process, excellent photoelectric conversion performance and The effect of air stability
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Embodiment 1
[0064] A preparation method of a low grain boundary perovskite battery, comprising the steps of:
[0065] S1, Preparation of TiO 2 Nanoarray Film
[0066] Mix 50 mL of hydrochloric acid with a mass fraction of 37% and 50 mL of distilled water in a 150 mL beaker, and stir to obtain a hydrochloric acid solution;
[0067] 80 mL of the hydrochloric acid solution was introduced into a reaction kettle lined with polytetrafluoroethylene and inlaid with FTO glass, 1 mL of isopropyl titanate was added, and it was fully dissolved by ultrasonication for 5 min, heated at 180 ° C for 90 min, and cooled to room temperature to obtain TiO 2 Nanoarray films;
[0068] S2, configure MAPbI 3 precursor solution
[0069] 24 mL of methylamine and 10 mL of hydroiodic acid with a concentration of 57% aqueous solution were reacted with 100 mL of ethanol with a concentration of 33% in a nitrogen atmosphere for 2 h, and evaporated to form a white powder to obtain CH 3 NH 3 I crystal;
[0070] 0.4...
Embodiment 2
[0077] A preparation method of a low grain boundary perovskite crystal thin film, comprising the steps of:
[0078] S1, Preparation of TiO 2 Nanoarray Film
[0079] Mix 50 mL of hydrochloric acid with a mass fraction of 37% and 50 mL of distilled water in a 150 mL beaker, and stir to obtain a hydrochloric acid solution;
[0080] 80 mL of the hydrochloric acid solution was introduced into a reaction kettle lined with polytetrafluoroethylene and inlaid with FTO glass, 1.5 mL of isopropyl titanate was added, and ultrasonically made it fully dissolved;
[0081] The time for the ultrasonic to fully dissolve is preferably 15-20 min, and in this embodiment, the ultrasonic time is 18 min;
[0082] Heating at 180°C for 90min, and cooling to room temperature to obtain TiO 2 Nanoarray films;
[0083] S2, configure PbI 2 precursor solution
[0084] will be per 0.4g PbI 2 Dissolved in 3mL DMF solution, configured as PbI 2 The precursor solution, the PbI 2 The concentration in DMF ...
Embodiment 3
[0091] A preparation method of a low grain boundary perovskite crystal thin film, comprising the steps of:
[0092] S1, Preparation of TiO 2 Nanoarray Film
[0093] Mix 50 mL of hydrochloric acid with a mass fraction of 37% and 50 mL of distilled water in a 150 mL beaker, and stir evenly to obtain a hydrochloric acid solution, that is, the current preparation of the hydrochloric acid solution is the preparation;
[0094] 80 mL of the hydrochloric acid solution was introduced into a reaction kettle lined with polytetrafluoroethylene and inlaid with FTO glass, 1.5 mL of isopropyl titanate was added, and ultrasonically made it fully dissolved;
[0095] The time for the ultrasonic to fully dissolve is preferably 15-20 min, and in this embodiment, the ultrasonic time is 18 min;
[0096] Heating at 180°C for 120min, and cooling to room temperature to obtain TiO 2 Nanoarray films;
[0097] S2, configure PbI 2 precursor solution
[0098] the PbI 2 Dissolved in DMF solution, pre...
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