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Organic solar cell and preparation method thereof

A solar cell and organic technology, applied in the direction of circuits, photovoltaic power generation, electrical components, etc., can solve the problems of limited popularization, and achieve the effects of reduced corrosion, high current, and simple and easy preparation methods

Active Publication Date: 2019-11-15
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, light absorption in the visible region still limits its popularization

Method used

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  • Organic solar cell and preparation method thereof
  • Organic solar cell and preparation method thereof
  • Organic solar cell and preparation method thereof

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Embodiment 1

[0046] The organic compound monomer 2,2',7,7'-tetracarbazolyl-9,9-spirobifluorene (abbreviated as SpCz) was prepared by CV method to obtain thin film poly(2,2',7,7'-tetra Carbazolyl-9,9-spirobifluorene) (abbreviated as PSpCz).

[0047] (1) Dissolve 2,2',7,7'-tetracarbazolyl-9,9-spirobifluorene (abbreviated as SpCz) and supporting electrolyte tetrabutylammonium perchlorate (abbreviated as TBAP) In dichloromethane and acetonitrile (volume ratio 7:3), form a mixed solution, wherein SpCz concentration 0.1mmol / L, TBAP concentration 0.1mol / L;

[0048] (2) Using a three-electrode system, the polymer film was prepared by the CV method. The parameters are set as follows:

[0049] Scanning range: 0-1.4V; Scanning rate: 0.05V / s;

[0050] Number of scans: 1, 2, 3; Accuracy: 1E-5(A / V);

[0051] By spin-coating dichloromethane, the small molecules remaining on the surface of the polymer film are removed, and PTB7-Th:PC is constructed by subsequent spin-coating, thermal evaporation and o...

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Abstract

The invention belongs to the field of organic solar cells, and in particular relates to an organic solar cell and a preparation method thereof. The invention provides an application of spirobifluorenepolymers, and the spirobifluorene polymers can be used as an organic solar cell anode interface material; the material can be subjected to in-situ film formation on electroconductive glass by using apolymer monomer through a CV process; and in the film formation process, the thickness of the formed film can be regulated and controlled. The polymers provided by the invention are applied to the organic solar cell as an anode interface layer, and compared with PEDOT:PSS, the polymers provided by the invention can obtain a higher current and exhibit more dominant bimolecular recombination; afterthe polymer monomer is subjected to film formation through an electrochemical process, the neutral polymer film is formed; compared with the acidic PEDOT:PSS, the neutral interfacial layer has the following two advantages: 1, corrosion of an electrode by acidity is reduced; and 2, if an active layer material contains a basic group, an interfacial acid-base reaction of the neutral interfacial layer and the basic group can be avoided; and the preparation method provided by the invention is simple and easy to implement.

Description

technical field [0001] The invention belongs to the field of organic solar cells, and in particular relates to an organic solar cell and a preparation method thereof. Background technique [0002] As a clean and cheap sustainable energy source, organic solar cells (Organic Photovoltaics, referred to as OPVs) have achieved tremendous development and achieved a series of remarkable results in the decades since they were successfully developed. [0003] Based on the photovoltaic effect, OPVs use sunlight radiation to generate hole-electron pairs, which are then separated into carriers and enter the positive and negative electrodes respectively, so as to achieve the purpose of converting solar energy into electrical energy. Among them, interface materials play an important role in battery performance. Since the interface material plays the role of transporting carriers and blocking anti-excitons in the battery, it should have the following characteristics: (1) form an ohmic con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/02H01L51/42H01L51/44H01L51/46H01L51/48
CPCC08G61/02C08G2261/18C08G2261/3142H10K85/10H10K30/00H10K30/80Y02E10/549
Inventor 周惠琼杨朔
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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