A kind of stable perovskite solar cell and preparation method thereof
A technology of solar cells and perovskite, which is applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of unfavorable stability and volatility of perovskite cells, and achieve high long-term stability, good stability, and hole The effect of high mobility
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[0019] The preparation material of the metal electrode layer includes any one of gold, silver, copper, aluminum, conductive indium tin, and aluminum-doped zinc oxide.
[0020] The invention also discloses a preparation method of a stable perovskite solar cell, comprising the following steps: cleaning the transparent conductive layer, and preparing an electron transport layer, a perovskite layer, a hole transport layer and a metal electrode layer on the surface in sequence, wherein , the hole transport layer was prepared by the following method: 0.01 mg of 4,4-didodecylthiophene-2,2'-bis-1,3-dithiocyclopentadiene was dissolved in 1 mL of chlorobenzene After stirring, it was fully dissolved after heating at 60 °C, and it was spin-coated on the surface of the perovskite layer.
Embodiment 1
[0023] The first embodiment of the preparation method of the stable perovskite solar cell of the present invention includes the following steps:
[0024] Step 11, cleaning the conductive substrate layer: cleaning the conductive glass substrate prepared with ITO, drying with nitrogen, and treating with ultraviolet and ozone.
[0025] Step 12. Deposition of electron transport layer: spray 30nm thick PC on the surface of the treated conductive substrate 71 BM acts as the electron transport layer.
[0026] Step 13, depositing the perovskite layer: keep the temperature of the substrate on which the electron transport layer is deposited at 70 °C, spray 0.7 mol / L lead iodide solution, and use N,N-dimethylformamide and N,N-dimethylformamide in a volume ratio of 9:1. Dimethyl sulfoxide was used as a mixed solvent and annealed at 70 °C for 10 min to obtain a lead iodide layer with a thickness of 200 nm, on which a layer of formamidine hydroiodide and methylamine hydrochloric acid with ...
Embodiment 2
[0036] The second embodiment of the preparation method of the stable perovskite solar cell of the present invention includes the following steps:
[0037] Step 21, cleaning the conductive substrate: cleaning the prepared AZO conductive flexible PEN substrate, drying with nitrogen, and treating with ultraviolet and ozone.
[0038] Step 22, depositing an electron transport layer: C60 with a thickness of 30 nm was evaporated on the surface of the treated conductive substrate as an electron transport layer.
[0039] Step 23. Deposition of perovskite layer: 1.2mol / L MAPbI 3 The methylamine acetic acid solution was coated on the surface of the electron transport layer and annealed at a temperature of 100 °C for 10 minutes to obtain a 500 nm perovskite layer.
[0040] Step 24. Dissolve 0.01 mg of 4,4-didodecylthiophene-2,2'-bis-1,3-dithiocyclopentadiene in 1 mL of chlorobenzene, stir and heat at 60°C After fully dissolving, it was scraped on the surface of the perovskite layer with...
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