Non-fused electron acceptor material, preparation method and organic solar cell formed by non-fused electron acceptor material
An electron acceptor material, solar cell technology, applied in the fields of organic chemistry, electro-solid devices, semiconductor/solid-state device manufacturing, etc. Increase the cost of material synthesis and other issues to achieve the effect of low synthesis cost, suitable energy level and wide absorption range
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Embodiment 1
[0038] Using 1,4-dibromo-2,5-dihydroxybenzene as the initial raw material to synthesize PTIC, the reaction equation is:
[0039]
[0040] Among them, intermediate 1 was synthesized by the method reported in the literature Angewandte Chemie, International Edition, 2016, 55(2), 703-707; The synthetic steps of intermediate 2 and final product 3 are:
[0041] Under argon protection, intermediate 1 (395mg, 0.55mmol), 3-hexylthiophenecarbaldehyde (320mg, 1.64mmol), tricyclohexylphosphine fluoroborate (8.1mg, 0.022mmol), trimethylacetic acid (17mg , 0.17mmol), potassium carbonate (114mg, 0.83mmol), and toluene (20mL) were placed in a Schlenk vacuum-sealed bottle. After liquid nitrogen freezing, three cycles of evacuation and argon followed by addition of Pd(OAc) 2 (2.5mg, 0.011mmol), and then frozen for three times. Heat to reflux at 80°C for 24 hours. After the reaction, the reaction solution was extracted with dichloromethane, the organic phase was collected, washed with wat...
Embodiment 2
[0044] After the transparent conductive glass with strip-shaped ITO (cathode) etched on the surface is cleaned with cleaning agent, deionized water, acetone and isopropanol by ultrasonic oscillation, it is dried and treated with oxygen plasma for 15 minutes; Zinc oxide was spin-coated on the surface at a speed of 3000r / min, and dried at 150°C for 10 minutes; then, a mixed solution of PBDB-TF and PTIC was spin-coated on it at a speed of 3000r / min, and the total concentration of the solution was 15mg / mL. The solvent is chlorobenzene, the weight ratio of PBDB-TF and PTIC is 1:1.2, and the spin coating time is 40 seconds to obtain a blend film (active layer) of PBDB-TF and PTIC with a thickness of 100nm; annealing treatment at 120°C 10 minutes; then a layer of MoO was spin-coated on the active layer 3 , the rotating speed is 3000r / min, the concentration of the solution is 2mg / ml; finally, when the pressure is lower than 5×10 -4 A layer of Ag with a thickness of 100nm was evaporat...
Embodiment 3
[0048] Using 1,4-dibromo-2,5-dihydroxybenzene as the initial raw material to synthesize PTICH_H, the reaction equation is:
[0049]
[0050] Among them, intermediate 1 was synthesized by the method reported in the literature Angewandte Chemie, International Edition, 2016, 55(2), 703-707; The synthetic steps of intermediate 5 and target product 6 are:
[0051] 1 (395mg, 0.55mmol), K 2 CO 3 (114mg, 0.83mmol), palladium acetate (2.5mg, 0.011mmol), PCy 3 ·HBF 4 (8.1mg, 0.022mmol) and trimethylacetic acid (17mg, 0.17mmol) were added to a 50mL two-neck round bottom flask. Flasks connected N 2 Take three breaths. then in N 2 2-thiophenecarbaldehyde (185 mg, 1.65 mmol) and toluene (15 mL) were added under protection. Reaction solution in N 2 Heat to reflux at 80° C. for 16 hours under atmosphere. After the reaction, cool to room temperature, add saturated saline, and extract three times with dichloromethane, combine the organic layers, dry using anhydrous magnesium sulfate ...
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