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Preparation method of active layer applicable to polymer solar cell

A technology for solar cells and active layers, applied in the field of solar cells, can solve problems such as poor contact quality and uneven distribution of coating films, and achieve the effects of improving adhesion, overcoming unevenness, and ensuring light absorption

Active Publication Date: 2016-08-24
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method to improve the active layer in order to solve the defects of uneven distribution of the coating film and poor contact quality between the substrate and the substrate when the active layer is prepared on the surface of the rough substrate in the existing organic polymer battery. Adhesion between layer and substrate, active layer thin film is uniform and suitable for the preparation method of active layer of polymer solar cell

Method used

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  • Preparation method of active layer applicable to polymer solar cell
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh P3HT and PCBM, dissolve P3HT and PCBM in 1mL chlorobenzene solution with a mass ratio of 1:0.8, including P3HT: 12mg / mL; PCBM: 9.6mg / mL, seal and place on a magnetic heating stirrer, The temperature of the stirrer was set at 50°C, and the stirring time was 12 hours. After stirring, it was placed in a dry, cool and dark place.

[0025] Apply the active layer solution dropwise on the suede substrate, adjust the speed of the homogenizer to 300rpm and spin coating time for 6s; after the spin coating is completed, apply the active layer solution for the second time, adjust the speed of the homogenizer to 800rpm and spin coating time 30s; for the third drop coating of the active layer solution, adjust the speed of the homogenizer to 1000rpm and spin the coating time to 20s; the preparation of the active layer is completed. Place the thin film sample of the active layer in a sealed vessel with a cover, in a cool place away from light, and perform solvent annealing for 4 ...

Embodiment 2

[0028] Weigh PTB7 and PC61BM, dissolve PTB7 and PC61BM in 1mL chlorobenzene solution with a mass ratio of 1:0.7, including PTB7: 12mg / mL; PC61BM: 8mg / mL, seal and place on a magnetic heating stirrer, stir The temperature of the device was set at 45°C, and the stirring time was 8 hours. After stirring, it was placed in a dry, cool and dark place.

[0029] Apply the active layer solution dropwise on the suede substrate, adjust the speed of the homogenizer to 200rpm and spin coating time for 3s; after the spin coating is completed, apply the active layer solution for the second time, adjust the speed of the homogenizer to 500rpm and spin coating time for 10s; for the third drop coating of the active layer solution, adjust the speed of the homogenizer to 800rpm and spin the coating time to 30s; the preparation of the active layer is completed. Place the thin film sample of the active layer in a sealed vessel with a cover, in a cool place away from light, and perform solvent anneal...

Embodiment 3

[0032] Weigh P3HT and PC71BM, dissolve P3HT and PC71BM in 1mL chlorobenzene solution with a mass ratio of 1:0.9, including PTB7: 12.6mg / mL; PC61BM: 10mg / mL, seal and place on a magnetic heating stirrer, The temperature of the stirrer was set at 60°C, and the stirring time was 14 hours. After stirring, it was placed in a dry, cool and dark place.

[0033]Before the active layer solution is spin-coated on the substrate material, the auxiliary agent solution is spin-coated on the substrate material to form an auxiliary agent film, and the auxiliary agent solution is suspended in 20 mL of iridium acetylacetonate and 50 mg of graphene powder. Concentration of 30wt% ammonia water, after 10min of ultrasonic vibration and freezing at -10°C for 12h; spin coating speed is 4500rpm, time is 50s, thickness is 15nm; then spin coat the active layer solution, and adjust the homogenizer for the first spin coat The rotation speed is 500rpm and the spin coating time is 10s; after the spin coatin...

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Abstract

The invention relates to a preparation method of an active layer applicable to a polymer solar cell. The preparation method comprises the steps of dissolving a donor material and a receptor material into an organic solvent to form an active layer solution, then spinning the active layer solution onto a substrate material thrice to prepare an active layer film, finally annealing the substrate material with the active layer film, and storing the substrate material in a sealed container in a shaded mode. The revolving speed and time of a spinning machine are continuously adjusted thrice: low speed and short time for preparing a film I, medium speed and long time for preparing a film II, and high speed and long time for preparing a film III, so that the non-uniform active layer film caused by the non-uniform substrate surface can be overcome, the attachment of the active layer to the substrate is improved, the thickness of the active layer required by the polymer cell can be guaranteed, and effective light absorption can be ensured. The problems of scattering distribution and poor attachment to the substrate, which easily appear in single spinning of the active layer film, are solved.

Description

technical field [0001] The invention relates to the technical field of solar cells in new energy sources, in particular to an active layer preparation method suitable for polymer solar cells that improves the adhesion between an active layer and a substrate and has a uniform thin film of the active layer. Background technique [0002] In today's society, the rapid economic development has brought serious problems such as energy crisis and global warming. The development and utilization of renewable clean energy has attracted widespread attention from all over the world. Different from traditional energy sources such as coal, oil, and natural gas, solar energy is a green, clean, and renewable energy source that is inexhaustible and has the potential to become an important part of supply. As a photoelectric conversion device, solar cells have received more and more attention in their research and application. Compared with expensive silicon-based solar cells, polymer solar ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K85/00H10K30/80H10K30/00Y02E10/549
Inventor 余璇于晓明陈立桥潘洪军
Owner ZHEJIANG OCEAN UNIV