Ink-jet printing preparation method of organic solar battery optical active layer film

A solar cell and photoactive layer technology, which is applied in the field of solar cells, can solve the problems of excessive fluctuations in the surface height of the photoactive layer film of organic solar cells, and the slow drying rate of the solution, so as to achieve good leveling, good solubility, Guaranteed solubility and stability effects

Inactive Publication Date: 2013-01-30
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide an inkjet printing preparation method for the photoactive layer film of organic solar cells to solve the problems that the surface height of the photoactive layer film of organic solar cells obtained by the existing preparation method is too large and the drying rate of the solution is too slow. method

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  • Ink-jet printing preparation method of organic solar battery optical active layer film
  • Ink-jet printing preparation method of organic solar battery optical active layer film
  • Ink-jet printing preparation method of organic solar battery optical active layer film

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preparation example Construction

[0024] The invention provides an inkjet printing preparation method of a photoactive layer film of an organic solar cell, comprising the following steps:

[0025] Step 1: Mix the base solvent and the added solvent to form a mixed solvent, weigh the electron donor material P3HT (poly-3-hexylthiophene) and the electron acceptor material PC61BM (2ALPHA-phenyl-1,2(2ALPHA)-high[ 5,6] fullerene-C60-LH-2ALPHA-butyric acid methyl ester), added to the mixed solvent to dissolve to form a mixed solution; the base solvent is chlorobenzene, and the added solvent is o-dichlorobenzene, tetrahydronaphthalene , trimethylbenzene or chloronaphthalene, the volume percentage of the base solvent and the added solvent in the mixed solvent is (80%~98%): (2%~20%);

[0026] Step 2: Deposit the mixed solution obtained in Step 1 on the surface of the substrate provided with a hole injection layer and a transparent conductive layer through an inkjet printing device. The thickness of the printing liquid la...

Embodiment 1

[0033] (1) Solution configuration

[0034] Measure 9.0 ml of base solvent chlorobenzene and 1.0 ml of added solvent chloronaphthalene, mix them to form a mixed solvent, then weigh 50 mg of electron donor material P3HT and 50 mg of electron acceptor material PC61BM, add them to the mixed solvent at 40 °C dissolved to form a mixed solution;

[0035] (2) Preparation of photoactive layer by inkjet printing

[0036] Deposit the mixed solution obtained in step (1) on the surface of the substrate provided with the PEDOT hole injection layer and the ITO transparent conductive layer through an inkjet printing device. The thickness of the printing solution layer is 20 microns, and the substrate temperature is 20°C. After the solution is dried The photoactive layer thin film of the organic solar cell is obtained.

[0037] figure 2 It is an atomic force microscope surface topography picture of the organic solar cell photoactive layer film obtained in Example 1. The experimental result...

Embodiment 2

[0039] (1) Solution configuration

[0040] Measure 9.0 ml of base solvent chlorobenzene and 1.0 ml of added solvent trimethylbenzene, mix them to form a mixed solvent, then weigh 50 mg of electron-donor material P3HT and 50 mg of electron-acceptor material PC61BM, add them to the mixed solvent at 70°C dissolved to form a mixed solution;

[0041] (2) Preparation of photoactive layer by inkjet printing

[0042] The mixed solution obtained in step (1) is deposited on the surface of the substrate provided with the PEDOT hole injection layer and the ITO transparent conductive layer through an inkjet printing device. The thickness of the printing solution layer is 40 microns, and the substrate temperature is 20 ° C. After the solution is dried The photoactive layer thin film of the organic solar cell is obtained. Figure 4 It is an atomic force microscope surface topography picture of the organic solar cell photoactive layer film obtained in Example 2. The experimental results sho...

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Abstract

The invention discloses an ink-jet printing preparation method of an organic solar battery optical active layer film, in order to solve the problems that the surface height fluctuation of the organic solar battery optical active layer film obtained by the conventional preparation method is too high, and the solution drying rate is too slow. The method comprises the following steps of: forming a mixed solvent by adopting a base solvent and an additive solvent; then adding an electron donor material P3HT and an electron acceptor material PC61BM into the mixed solvent so as to form a mixed solution; depositing the mixed solution to the surface a base which is provided with a hole injection layer and a transparent conducting layer through an ink-jet printing device; and drying the solution, thereby obtaining the organic solar battery optical active layer film, wherein the base solvent is chlorobenzene, the additive solvent is orthodichlorobenzene, tetrahydronaphthalene, trimethylbenzene or chloronaphthalene. The optical active layer film formed by the method provided by the invention is low in surface roughness degree, is low in largest surface height fluctuation, and is small in phase separation dimension; a micro crystal structure can be formed in a P3HT phase; and the film during the processing course is easy to dry.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to an ink-jet printing preparation method of a photoactive layer film of an organic solar cell. Background technique [0002] Organic solar cells absorb solar energy and convert it into electricity through a photoactive layer of organic semiconductors. Due to its simple structure, low-cost large-area printing in a solution method, and compatibility with flexible and lightweight plastic substrates, it has become an ideal solution for mobile portable energy and new clean energy. The photoactive layer of organic solar cells is a key factor determining the energy conversion efficiency of solar cells. Currently, the widely used photoactive layer material of organic solar cells is mainly poly-3-hexylthiophene (hereinafter referred to as P3HT), and the main electron acceptor material is 2ALPHA-phenyl-1,2(2ALPHA)-high[5 ,6] Fullerene-C60-LH-2ALPHA-butyric acid methyl ester (hereinaf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48B41M5/00
CPCY02E10/549
Inventor 韩艳春丁艳邢汝博刘剑刚孙岳
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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