Organic photoactive layer composite ink, organic solar cell and preparation method thereof

A photoactive layer, organic technology, applied in the field of high-stability organic solar cells and their preparation, to achieve the effects of improving energy conversion efficiency, simple and convenient preparation method, and wide applicability

Active Publication Date: 2021-02-23
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods to improve the structural stability of the active layer are mainly through the design and synthesis of donor materials and the development and use of non-fullerene materials. There are few suitable methods that can not affect the device efficiency without changing the materials in the active layer. It can also improve the stability of the device

Method used

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  • Organic photoactive layer composite ink, organic solar cell and preparation method thereof
  • Organic photoactive layer composite ink, organic solar cell and preparation method thereof
  • Organic photoactive layer composite ink, organic solar cell and preparation method thereof

Examples

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preparation example Construction

[0080] Another aspect of the embodiments of the present invention provides the aforementioned method for preparing the organic photoactive layer composite ink, which includes: dissolving an organic amine compound, an electron acceptor material, and an electron donor material in an organic solvent, and mixing them uniformly to obtain the obtained The organic photoactive layer composite ink.

[0081] Another aspect of the embodiments of the present invention also provides an organic photoactive layer composite film, which is formed from the aforementioned organic photoactive layer composite ink.

[0082] In some embodiments, the organic photoactive layer composite film includes any one or a combination of two or more of poly(3-hexylthiophene), PTB7, PTB7-Th, PffBT4T-2OD and its structural variants as Electron donor material, [6,6]-phenyl-C 61 - Methyl butyrate, PC 71 BM, Bis-PC 61 BM and IC 61 Any one or a combination of two or more of BA is used as an electron acceptor mate...

Embodiment 1

[0120] Example 1: Based on poly 3-hexylthiophene (P3HT): [6,6]-phenyl-C 61 - Methyl butyrate (PC 61 BM): Preparation of inverted-structure polymer solar cells with piperazine (different content) as organic photoactive layer

[0121] The preparation method is shown in Comparative Example 1. The organic photoactive layer is composed of electron donor material P3HT, electron acceptor material PC 61 BM and piperazine are mixed and dissolved in o-dichlorobenzene and prepared by mixing P3HT and PC 61 The mass percentage of BM is 1:1, and the contents of piperazine are P3HT and PC respectively. 61 1wt%, 3wt%, 5wt%, 7wt%, 10wt% of the total mass of BM. The structure of the organic solar cell prepared in this embodiment is: transparent substrate / ITO / ZnO / P3HT: PC 61 BM: piperazine / MoO 3 / Al (100nm). Wherein the structure of piperazine is shown in formula (9).

[0122]

[0123] Table 2 P3HT:PC with different piperazine contents 61 Performance parameters of BM devices

[0124]...

Embodiment 2

[0126] Example 2: Based on poly 3-hexylthiophene (P3HT): [6,6]-phenyl-C 61 - Methyl butyrate (PC 61 BM): Preparation of inverted-structure polymer solar cells with N,N′-dimethylethylenediamine (1 wt%) as the organic photoactive layer

[0127] The preparation method is shown in Comparative Example 1. The organic photoactive layer is composed of electron donor material P3HT, electron acceptor material PC 61 It is prepared by mixing BM and N,N'-dimethylethylenediamine and dissolving in o-dichlorobenzene, wherein P3HT and PC 61 BM mass percentage 1:1, N, N'-dimethylethylenediamine content is P3HT and PC 61 1 wt% of the total mass of BM. The structure of the organic solar cell prepared in this embodiment is: transparent substrate / ITO / ZnO / P3HT: PC 61 BM: N,N'-Dimethylethylenediamine / MoO 3 / Al (100nm). Wherein the structure of N,N'-dimethylethylenediamine is shown in formula (10).

[0128]

[0129] Table 3 P3HT with 1 wt% N, N'-dimethylethylenediamine: PC 61 Performance pa...

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Abstract

The invention discloses an organic photoactive layer composite ink, an organic solar battery and a preparation method thereof. The composite ink of the organic photoactive layer comprises an electron donor material, an electron acceptor material, an organic amine compound and an organic solvent, and the content of the organic amine compound in the organic photoactive layer is the ratio of the electron donor material and electron 0.01wt%-10wt% of the total mass of the acceptor material. Through the interaction between the organic amine compound and the molecules of the photoactive layer material, the invention can effectively inhibit the photochemical reaction of the molecules of the active layer, remarkably improve the photostability of the photoactive layer material, and further greatly improve the stability of the solar cell. The organic solar cell prepared by the invention has the advantages of high stability, long service life, etc., and the energy conversion efficiency and other work performances have been effectively improved, and meanwhile, the preparation process is simple and convenient, the material cost is low, and the economic benefit is high.

Description

technical field [0001] The invention specifically relates to a photoactive layer composite ink material of an organic solar cell, a high-stability organic solar cell formed by using the composite ink material and a preparation method thereof, and belongs to the technical field of photoelectric functional materials and devices. Background technique [0002] Organic solar cells have attracted widespread attention due to their advantages such as low cost, light weight, good bending performance, and large-area printing. In recent years, with the unremitting efforts of scientists, the photoelectric conversion efficiency of organic solar cells has exceeded 11%, gradually approaching the threshold of commercialization. In contrast, the stable performance of current organic solar cell devices is far from meeting the application requirements. [0003] A large number of research results have shown that during the working process of organic solar cells, there will be a phenomenon of r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/03C09D11/38H01L51/42H01L51/46H01L51/48
CPCC09D11/03C09D11/38H10K71/441H10K85/654H10K85/6572H10K30/451H10K71/00H10K2102/00Y02E10/549C09D11/52Y02P70/50C09D11/10C07D487/04C07D409/14H10K71/15H10K30/30C09D11/102H10K85/60H10K85/113H10K85/151H10K85/215H10K85/621H10K85/624H10K85/626H10K85/655H10K85/6576H10K30/00H10K2102/351
Inventor 闫翎鹏伊今垛谭铭希马昌期
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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