A kind of perovskite planar heterojunction solar cell and its preparation method
A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of perovskite film-forming quality, complex preparation methods, environmental problems, etc., to reduce material consumption costs and uniform reaction , The effect of saving processing costs
Active Publication Date: 2021-03-19
JINAN UNIVERSITY
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Problems solved by technology
in BA + ions and Cs + In terms of the introduction of ions, by combining BAI, FAI, CsI, etc. with PbBr 2 and PbI 2 Dissolved in organic solvents such as DMF in a certain proportion, the prepared perovskite solar cells have good stability, but the preparation method is complicated
[0005] Currently using BA + Cation instead of MA + The ion method is realized by the solution method. The organic solvents such as DMSO, GBL, and DMF introduced in the preparation process of the solution method have many uncertain effects on the film quality of the perovskite. What is more unfavorable is that these solvents are all There is a certain degree of toxicity, if the follow-up treatment is not proper, large-scale application will inevitably lead to serious environmental problems
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[0037] The present invention will be further described in detail below with reference to the examples and drawings, but the implementation of the present invention is not limited thereto.
[0038] Treatment of MAPbI with BAI steam at different times based on gas phase method 3 Thin film fabrication of highly stable perovskite planar heterojunction solar cells.
[0039] The FTO substrate with a square resistance of 15Ω / □ and an area of 15mm×15mm was etched with zinc powder and dilute hydrochloric acid to form a rectangle with an area of 5mm×15mm as the test terminal of the battery anode. The etched FTO substrate was ultrasonically cleaned with detergent, deionized water, acetone, and isopropanol in sequence, and the ultrasonic cleaning time was 15 minutes each. The cleaned FTO substrate is blown dry with N2 gas, and the area of 3mm×15mm is covered with high temperature resistant tape to form a mask. electrode.
[0040] Then put the base on O 2 O 2 plasma treatment. ...
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Abstract
The invention relates to a perovskite planar heterojunction solar cell and a preparation method thereof. The solar cell includes a conductive substrate FTO, an electron transport layer, a three-dimensional-two-dimensional perovskite layer, a hole transport layer, and an electrode; wherein, the three-dimensional-two-dimensional perovskite layer is prepared by a gas phase method. The present invention uses a three-dimensional-two-dimensional perovskite layer as a light-absorbing layer, which improves the humidity and temperature stability of the solar cell on the one hand, reduces the requirements for packaging in the process, and reduces the use of organic solvents. On the other hand, the three-dimensional-two-dimensional perovskite layer prepared by this vapor phase method is more valuable for industrial production, which provides a new idea for the industrial production of perovskite solar cells with high stability.
Description
technical field [0001] The invention belongs to the technical field of solar cell preparation, and in particular relates to a perovskite planar heterojunction solar cell and a preparation method thereof. Background technique [0002] Organic-inorganic hybrid perovskite solar cells have been a research hotspot in the field of solar cells in recent years. Due to the excellent properties of organic-inorganic hybrid perovskite materials such as large absorption coefficient, long carrier lifetime and suitable and adjustable band gap, organic-inorganic hybrid perovskite materials The photoelectric conversion efficiency of solar cells has increased from 3.8% to 22.7% in just a few years. The large coefficient and long carrier life of perovskite make the thickness of the light absorbing layer only need about 300nm, and the adjustable band gap makes perovskite materials not only applied in the field of solar cells, but also in It has also been applied to light-emitting devices. ...
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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/16H10K85/371H10K30/10Y02E10/549Y02P70/50
Inventor 谢伟广林东旭刘彭义
Owner JINAN UNIVERSITY