Novel fullerene electron transfer layer material and perovskite solar battery prepared from same
A technology of electron transport material and electron transport layer, applied in the field of new materials and solar cells, can solve the problems of low electron mobility and high cost of PCBM, and achieve the effect of improving device efficiency
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Embodiment 1
[0039] Using bis(3-(pyridin-4-yl)propyl)malonate and C 60 The Bingel reaction to synthesize PCP, the reaction equation is:
[0040]
[0041] Among them, C 60 Purchased through commercial channels, bis(3-(pyridin-4-yl)propyl)malonate was synthesized by the method reported in reference Polyhedron 2015,87,417. The synthesis steps of PCP are
[0042] Add 152.5mg bis(3-(pyridin-4-yl)propyl) malonate, 317.7mg C 60 and 292.3mg of carbon tetrabromide were dissolved in 70ml of chlorobenzene, then bubbled with argon for 30 minutes, added DBU 0.18ml (ρ=1.018g / ml), and stirred at room temperature for 5 hours; after the reaction, the reaction mixture was poured into Silica gel chromatography column, using toluene, dichloromethane / methanol as eluent, purified to obtain a tan solid product (175.6 mg, yield 38%).
[0043] The HOMO energy level of PCP measured by cyclic voltammetry (CV) method is -3.88eV; the maximum absorption peak of PCP under the thin film state is located at 335nm b...
Embodiment 2
[0045] Using bis(2-methoxyethyl)malonate and C 60 The Bingel reaction to synthesize MCM, the reaction equation is:
[0046]
[0047] Among them, C 60 Commercially available, bis(2-methoxyethyl)malonate is prepared by hydrochloric acid-catalyzed esterification. The synthesis steps of MCM are:
[0048] Add 260mg bis(2-methoxyethyl) malonate, 1.021g C 60 Dissolve 785mg of carbon tetrabromide in 120ml of chlorobenzene, then bubble with argon for 30 minutes, add 0.44ml of DBU (ρ=1.018g / ml), and stir at room temperature for 5 hours; after the reaction, the reaction mixture is poured into silica gel Chromatographic column, using toluene, dichloromethane / methanol as eluent, purified to obtain a brown solid product (700 mg, yield 63%).
[0049] The LUMO energy level of MCM measured by cyclic voltammetry (CV) method is-3.88eV; the maximum absorption peak of MCM under the thin film state is measured at 336nm by ultraviolet-visible absorption spectrum, and the absorption band edge ...
Embodiment 3
[0051] The transparent conductive glass with strip-shaped ITO (anode) etched on the surface was cleaned with cleaning agent, deionized water, acetone and isopropanol by ultrasonic oscillation for 15 minutes, dried with nitrogen flow, and then treated with oxygen plasma for 20 minutes; NiO x It is prepared by spin-coating precursor solution (nickel(II) nitrate hexahydrate: ethylenediamine = 1M: 1M ethylene glycol solution) on an ITO glass substrate and annealing at 300°C for 1 hour, reference Nature Nanotechnology 2015, 11, 75 method of reporting. Methylammonium iodide (MAI) and lead iodide (PbI 2 ) was dissolved in a mixed solvent of dimethylacetamide: methylpyrrolidone (4:1) at a total concentration of 1.4M according to a molar ratio of 1:1; before spin-coating the perovskite layer, the precursor solution and NiO x The substrate is heated to 70°C; during the spin coating process, 1000rpm is maintained for 10 seconds, and 4000rpm is maintained for 30 seconds. After the hot pr...
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