A perovskite solar cell and a preparation method thereof
A solar cell and perovskite technology, applied in the field of solar cells, can solve problems such as poor thermal stability and achieve the effect of improving thermal stability
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[0034] The present invention also provides the preparation method of the perovskite solar cell described in the above technical scheme, comprising the following steps:
[0035] (1) Under ultrasonic conditions, the transparent conductive glass substrate is washed with detergent, acetone, isopropanol, ethanol, and deionized water in sequence, and then dried with nitrogen to obtain a pretreated substrate;
[0036] (2) Spin coating the zinc oxide precursor solution on the surface of the pretreated substrate to obtain FTO / ZnO;
[0037] (3) Soak the FTO / ZnO obtained in the step (2) in a CdS solution to obtain FTO / ZnO / CdS;
[0038] (4) the surface of the CdS layer of FTO / ZnO / CdS obtained in the step (3) is spin-coated with CH 3 NH 3 PB 3 After the perovskite precursor solution is annealed, FTO / ZnO / CdS / CH 3 NH 3 PB 3 ;
[0039] (5) FTO / ZnO / CdS / CH obtained in said step (4) 3 NH 3 PB 3 Middle CH 3 NH 3 PB 3 The surface of the layer is spin-coated with the hole transport lay...
Embodiment 1
[0069] The FTO glass was ultrasonically cleaned with detergent, acetone, isopropanol, ethanol, and deionized water for 30 min in sequence, and then the glass was blown dry with a nitrogen gun and treated with oxygen plasma for five minutes before use.
[0070] 0.29g of KOH was dissolved in 13mL of methanol solution to prepare solution 1; 0.59g of Zn(CH 3 COO) 2 2H 2 O was added to 25 mL of methanol solution, stirred and dissolved in a water bath at 65°C to form solution 2; solution 1 was added dropwise to solution 2, and stirred for 2.5 hours under water bath conditions, and the obtained nanoparticles were washed with methanol for 2 to 3 hours. In order to remove residual ions, the nanoparticles were dissolved in 14mL n-butanol, 1mL methanol, and 1.5mL chloroform to form a ZnO precursor solution to obtain a zinc oxide precursor solution. filter.
[0071] Take 100 μL of the above ZnO precursor solution and spin-coat it onto a clean FTO glass substrate at a spin-coating speed...
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