Light down-conversion material and preparation method thereof, light down-conversion adhesive film and photovoltaic module
A conversion material and photovoltaic module technology, applied in the direction of luminescent materials, photovoltaic power generation, chemical instruments and methods, etc., can solve the problems of limited rare earth element content, easy decomposition and failure, and achieve good stability
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[0032] The present invention also discloses a method for preparing the light down-conversion material as described above, comprising the following steps:
[0033] Step 1. Dissolve 2mmol of 1,5-difluoro-2,4-dinitrobenzene and 4mmol of potassium carbonate in 20mL of absolute ethanol, react at 60°C for 2h, then add 4mmol of isobutylamine to 10mL of anhydrous In ethanol, after stirring evenly, add 1,5-difluoro-2,4-dinitrobenzene and potassium carbonate in anhydrous ethanol solution, and react at 80°C for 12h to obtain intermediate 1 (1,2,4, 5-tetranitro-N1,N5-diisobutylbenzene).
[0034] Step 2: Add 4mmol lithium aluminum hydride and 0.5mol intermediate 1 to 10mL anhydrous tetrahydrofuran, stir and react at 60°C for 24h, then slowly add 1mL water to the reaction system to obtain the precipitated intermediate 2 (N1,N5-di Isobutylbenzene-1,2,4,5-tetramine).
[0035] Step 3. Dissolve the intermediate 2 prepared in step 2 and 2 mmol of 5-bromo-2-thiophenecarbaldehyde in a mixed solu...
Embodiment 1
[0054] please refer again figure 1 As shown, the first embodiment of the method for preparing a photovoltaic module of the present invention, taking the preparation of a perovskite photovoltaic module (three-glass structure module) as an example, includes the following steps:
[0055] Step 11. Preparation of perovskite devices: laser cutting the conductive substrate 7 containing FTO to completely insulate the sub-cells on both sides of the cutting line, then cleaning, drying with nitrogen, and UV treatment. A 20 nm thick PTAA was deposited on the substrate as a hole transport layer by screen printing. Continuous coating of Cs by slit 0.15 FA 0.85 PB 3 The solution is coated on the substrate 7, wherein the concentration of the solution is 1.2mol / L, the solvent is a mixed solvent of N,N-dimethylformamide and dimethyl sulfoxide with a volume ratio of 4:1, annealed at 100°C After 10 minutes, a 500 nm perovskite layer was obtained. Then evaporate 30nm of C 60 , 10nm MoO 3 A...
Embodiment 2
[0063] please refer again figure 2 As shown, the second embodiment of the preparation method of the photovoltaic module of the present invention, taking the preparation of another perovskite photovoltaic module (two-glass structure module) as an example, includes the following steps:
[0064] Step 21. Prepare the base glass with the down-converting adhesive film: place the conductive surface of the ITO glass substrate 7 facing down, place the down-converting adhesive film 4 on the non-conductive surface, and cover the down-converting adhesive film 4 One layer of ethylene-tetrafluoroethylene copolymer film acts as the top protective film 6 for protection. Put the assembled three-layer material into the laminator for lamination processing. The lamination temperature is 90° C., the lamination pressure is 90 kPa, and the lamination time is 10 minutes.
[0065] Step 22. Fabricate a perovskite photovoltaic device on the conductive surface on the back of the laminated glass substr...
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