Conductive polymer dispersion system as well as preparation method and application thereof

Abstract

The invention discloses a conductive polymer dispersion system as well as a preparation method and application thereof. The conductive polymer dispersion system comprises a heteropolyacid compound mixture and an aromatic monomer compound, and the aromatic monomer compound is subjected to an oxidative polymerization reaction to obtain the conductive polymer dispersion system; and carrying out oxidative polymerization reaction on the aromatic monomer to obtain the conductive polymer dispersion system. The conductive polymer dispersion system can be used in an anode interface of an organic semiconductor device after being treated, and the contact performance between an organic active layer and an electrode can be effectively adjusted, so that the performance of the device is improved; in addition, the provided conductive polymer dispersion system is moderate in pH value, and the stability of a device based on the anode interface can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of organic photoelectric devices, and more specifically, to a conductive polymer dispersion system, a preparation method thereof, and an application thereof in organic solar cells. Background Art

[0002] As the global energy crisis becomes increasingly serious, the demand for renewable energy is becoming more and more urgent. As an inexhaustible clean energy source, solar energy has received widespread attention. Organic solar cells have the advantages of low cost, light weight, and flexible preparation. They have great potential for large-scale applications and have therefore become an important direction in solar cell research. The rapid development of portable electronic devices has also put forward higher requirements for thin and flexible power sources. Organic solar cells can meet these requirements well, making it possible for electronic devices to be self-powered, and further promoting the research and development of organic solar cells.

[0003] Early research focused on finding suitable photoactive layer materials to achieve effective photoelectric conversion. Relatively little attention was paid to the anode interface, and the anode interface materials used initially were relatively simple and had limited performance. With the deepening of research on organic semiconductor physics, people gradually realized that in organic solar cells, the interface properties between the anode and the active layer play a vital role in charge extraction and transport. This provides a theoretical basis for the subsequent research on anode interface materials and promotes the exploration of anode interface materials with specific functions. As the efficiency of organic solar cells continues to increase, the performance requirements for the anode interface are also getting higher and higher. In order to achieve higher charge extraction efficiency, researchers continue to explore new anode interface materials and structures. For example, by constructing an anode interface layer with a suitable energy level structure, the energy barrier for charge transfer can be reduced, and the transfer of holes from the active layer to the anode can be promoted, thereby improving the short-circuit current and photoelectric conversion efficiency of the device. In addition, the stability of the anode interface plays an important role in the stability of the entire device. Researchers are committed to developing anode interface materials with good stability and optimizing the preparation process of the anode interface to improve the stability of the device during long-term use. At present, anode interface materials mainly include three categories: conductive polymers, metal oxides and small molecule materials. Polymer interface materials such as poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS) have good conductivity and high transmittance, which can improve the charge transfer between the anode and the active layer and improve the performance of the device. Therefore, it has become the most commonly used hole transport material. However, the strong acidity and hygroscopicity of PEDOT:PSS will affect the stability of the device. Metal oxides such as MoO 3 、V 2 O 5 , WO 3Although they have good conductivity and stability, they are mostly deposited into films by various methods such as thermal evaporation, electron beam evaporation, and vacuum sputtering, which are costly and not easy to prepare on a large scale. Small molecule materials have the advantages of clear structure, easy synthesis and modification. By designing and optimizing the small molecule structure, its interaction with the anode and the active layer can be adjusted to improve the charge extraction efficiency. However, the film formation of small molecule materials is difficult, and crystallization is prone to occur during the film formation process, making the microstructure of the film uneven, causing the charge transfer path to become complicated and discontinuous. This will not only increase the scattering and recombination probability of the charge during the transmission process, reduce the charge transfer efficiency, but also affect the absorption and utilization efficiency of the solar cell to light, thereby reducing the photoelectric conversion efficiency of the battery. Therefore, there is a need in the art to develop a new anode interface material to improve the stability of the device and have a higher photoelectric conversion efficiency. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a new conductive polymer dispersion system, wherein the conductive polymer dispersion system is obtained by mixing a dual heteropoly acid compound with an aromatic monomer compound to obtain an organic interface ink, which can be applied to organic photoelectric devices to effectively improve the efficiency and stability of the device.

[0005] Another object of the present invention is to provide a method for preparing the conductive polymer dispersion system.

[0006] Another object of the present invention is to provide an anode interface material ink for an organic photoelectric device.

[0007] Another object of the present invention is to provide a method for preparing the anode interface material for the organic photoelectric device.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A conductive polymer dispersion system includes a heteropolyacid compound mixture and an aromatic monomer compound, and the aromatic monomer compound is subjected to an oxidative polymerization reaction to obtain the conductive polymer dispersion system;

[0010] The heteropolyacid compound mixture includes a mixture of heteropolyacid compounds containing at least two elements selected from molybdenum, tungsten and vanadium;

[0011] The molar ratio of any two heteropolyacid compounds is 1:10 to 10:1;

[0012] The ratio of the total mole number of the heteropolyacid compound mixture to the mole number of the aromatic monomer compound is 10:1 to 1:30.

[0013] The conductive polymer dispersion system in the above scheme has lower acidity and suitable work function; in addition, compared with directly using a single heteropolyacid compound or a single heteropolyacid salt compound, the hybrid conductive polymer dispersion system prepared by this patent can make its film-forming performance better and its conductivity higher; when applied to organic solar cells, it can effectively adjust its contact function between the organic active layer and the electrode, thereby improving the performance of the device.

[0014] In the present invention, the ratio of the total mole number of the heteropolyacid compound mixture to the mole number of the aromatic monomer compound is 10:1 to 1:30, for example but not limited to 10:1, 9:1, 8:1, 7:1, 6:1, 5:1, 4:1, 3:1, 2:1, 1:1, 1:2, 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:9, 1:10, 1:11, 1:12, 1:13, 1:14, 1:15, 1:16, 1:17, 1:18, 1:19, 1:20, 1:21, 1:22, 1:23, 1:24, 1:25, 1:26, 1:27, 1:28, 1:29 or 1:30, etc. can all achieve the present invention. Furthermore, the ratio of the total mole number of the heteropolyacid compound mixture to the mole number of the aromatic monomer compound is 1:0.5 to 1:15.

[0015] Furthermore, the ratio of the total mole number of the heteropolyacid compound mixture to the mole number of the aromatic monomer compound is 1:1 to 1:8.

[0016] More preferably, the molar ratio of any two heteropolyacid compounds is 1:1 to 5:1;

[0017] In some embodiments, the heteropolyacid compound may further contain elements such as phosphorus, silicon, germanium or arsenic, but is not limited thereto.

[0018] Furthermore, the heteropolyacid compound may be a heteropolyacid salt, such as an ammonium salt, a sodium salt, a potassium salt, and the like.

[0019] Furthermore, the aromatic monomer compound is one or more of aniline, thiophene, pyrrole, furan or benzene ring and its derivatives.

[0020] Specifically, the derivative is one or more of aniline, thiophene, pyrrole, furan and benzene ring with substituents, and the substituents include but are not limited to one or more of alkyl groups with 1 to 8 carbon atoms, alkoxy groups with 1 to 8 carbon atoms, halogen or aldehyde groups.

[0021] It should be understood that the benzene ring is C6H6.

[0022] Specifically, according to the selected monomer compound, the aromatic monomer compound is polymerized to form, including but not limited to, m-anisidine homopolymer, o-anisidine homopolymer, p-anisidine homopolymer, p-hydroxydiphenylamine homopolymer, phenothiazine homopolymer, etc.

[0023] Specifically, the oxidative polymerization reaction time is 48 to 96 hours.

[0024] Specifically, the oxidative polymerization reaction temperature is room temperature.

[0025] Specifically, the solvent includes one or more of water, alcohol solvents or ether solvents. The solvent is used to facilitate the dispersion of the raw materials.

[0026] Specifically, the alcohol solvent includes but is not limited to one or more of methanol, ethanol, isopropanol, tert-propanol or ethylene glycol, and the ether solvent includes but is not limited to one or more of diethyl ether, tetrahydrofuran, methyltetrahydrofuran or anisole.

[0027] Those skilled in the art will know that the conductive polymer dispersion system contains an aromatic polymer doped with two heteropolyacid compounds.

[0028] The present invention also provides a novel anode interface composite material ink for organic photoelectric devices, which is obtained by processing the hybrid conductive polymer dispersion system. In the anode interface material ink for organic photoelectric devices, the mass concentration of the aromatic polymer is 1-80 mg / mL.

[0029] The method for preparing the anode interface material ink for organic photoelectric devices comprises the following steps:

[0030] The conductive polymer dispersion system is purified and the filtrate is retained to obtain the conductive polymer dispersion system.

[0031] The anode interface composite material ink for organic photoelectric devices is used in preparing anode interface layer films of organic photoelectric devices.

[0032] Specifically, the organic optoelectronic device may be subjected to anode interface material ink deposition treatment by spin coating or printing to form an anode interface layer thin film.

[0033] An organic solar cell comprises an anode interface layer film formed by the ink.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The present invention provides a conductive polymer dispersion system, which can be used in the anode interface of an organic semiconductor device after being treated, and can effectively adjust the contact performance between the organic active layer and the electrode, thereby improving the performance of the device; in addition, the conductive polymer dispersion system provided has moderate pH value, and can effectively improve the stability of the device based on the anode interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A comparison of the acidity and alkalinity of the anode interface composite ink (Pp-ODBN:PWA:PMA) and PEDOT:PSS prepared in Example 3

[0037] Figure 2 The light transmittance performance diagram of the anode interface composite material ink prepared in Example 3 and the film prepared with PEDOT:PSS Figure 3 JV curve of the organic solar cell in Example 4

[0038] Figure 4 The thermal stability curve of the organic solar cell in air in Example 4 is

[0039] Figure 5 JV curve of the organic solar cell in Example 5

[0040] Figure 6 JV curve of the organic solar cell in Example 6 DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with specific embodiments, but the embodiments do not limit the present invention in any form. Unless otherwise specified, the raw materials and reagents used in the embodiments of the present invention are conventionally purchased raw materials and reagents.

[0042] Comparative Example 1

[0043] A method for preparing an anode interface material ink for an organic photoelectric device comprises the following steps:

[0044] 576 mg (0.2 mmol) of heteropolyacid compound (phosphotungstic acid, PWA for short) was dissolved in 20 mL of water to prepare a 28.8 mg / mL heteropolyacid aqueous solution, and then 296 mg (1.6 mmol) of p-hydroxydiphenylamine was added, and reacted at room temperature for 48 hours, and then an appropriate amount of ammonia water was added, and a conductive polymer dispersion system (Pp-ODBN: PWA) was obtained after filtration and purification. That is, the anode interface material ink of Comparative Example 1.

[0045] Each 1 mL of the composite material ink contains 14.8 mg of poly(p-hydroxydiphenylamine) product, with a concentration of 14.8 mg / mL.

[0046] Comparative Example 2

[0047] A method for preparing an anode interface material ink for an organic photoelectric device comprises the following steps:

[0048] 365 mg (0.2 mmol) of heteropolyacid compound (phosphomolybdic acid, PMA for short) was dissolved in 20 mL of water to prepare a 18.3 mg / mL heteropolyacid aqueous solution, and then 296 mg (1.6 mmol) of p-hydroxydiphenylamine was added, and reacted at room temperature for 48 hours, and then an appropriate amount of ammonia water was added, and a conductive polymer dispersion system (Pp-ODBN:PMA) was obtained after filtration and purification. That is, the anode interface material ink of Comparative Example 2.

[0049] Each 1 mL of the composite material ink contains 14.8 mg of poly(p-hydroxydiphenylamine) product, with a concentration of 14.8 mg / mL.

[0050] Example 1

[0051] A method for preparing an anode interface composite material ink for an organic photoelectric device comprises the following steps:

[0052] 432 mg (0.15 mmol) of heteropolyacid compound (phosphotungstic acid, PWA for short) was dissolved in 20 mL of water to prepare a 21.6 mg / mL heteropolyacid aqueous solution, 91 mg (0.05 mmol) of heteropolyacid compound (phosphomolybdic acid, PMA for short) was added, and then 197 mg (1.6 mmol) of m-methoxyaniline was added. After continuing the reaction for 36 hours, an appropriate amount of ammonia water was added, and a conductive polymer dispersion system (Pm-OCBN: PWA: PMA) was obtained after filtration and purification, i.e., the anode interface material liquid ink of Example 1.

[0053] Each 1 mL of the composite material ink contains 9.9 mg of poly-m-methoxyaniline product, with a concentration of 9.9 mg / mL.

[0054] Example 2

[0055] The steps and parameters are the same as those in Example 1, except that m-methoxyaniline is replaced with o-methoxyaniline in the same molar amount to obtain a conductive polymer dispersion system (Po-OCBN:PWA:PMA), i.e., the anode interface material ink of Example 2.

[0056] Each 1 mL of the composite material ink contains 9.9 mg of poly-o-anisidine product, with a concentration of 9.9 mg / mL.

[0057] Example 3

[0058] The steps and parameters are the same as those in Example 1, except that m-methoxyaniline is replaced with p-hydroxydiphenylamine in the same molar amount to obtain a conductive polymer dispersion system (Pp-ODBN:PWA:PMA), namely the anode interface material ink of Example 3.

[0059] Each 1 mL of the composite material ink contains 14.8 mg of poly(p-hydroxydiphenylamine) product, with a concentration of 14.8 mg / mL.

[0060] The anode interface material ink of comparative example 2 and the anode interface material ink of embodiment 3 were selected to test their work function, pH value and conductivity using AC3 photoelectron spectroscopy, pH meter and dual-electrode device, respectively. The results are shown in Table 1.

[0061] Table 1

[0062] Comparative Example 2 (Pp-ODBN:PMA) Example 3 (Pp-ODBN:PWA:PMA) Work function / eV 5.98 5.59 pH 4.98 5.75 <![CDATA[Conductivity / S*cm -1 > <![CDATA[7.25*10 -6 ]]> <![CDATA[8.98*10 -6 ]]>

[0063] It can be seen that the work function of the anode interface ink doped with a single heteropoly acid is relatively large, and it cannot form a good ohmic contact with the device electrode. It needs to be matched with commercial PEDOT:PSS to improve its performance. At the same time, the anode interface ink doped with a double heteropoly acid has a higher pH, reduced corrosiveness, and higher conductivity, which can increase carrier transport and collection.

[0064] The anode interface material ink and PEDOT:PSS solution described in Example 3 were tested for acidity, alkalinity and light transmittance. The results are as follows: Figure 1 and Figure 2 shown.

[0065] from Figure 1 It can be seen that the pH value of the anode interface material ink prepared in the present application is much higher than that of commercial PEDOT:PSS, which is beneficial to reduce the corrosion of the anode interface to the electrode and the active layer.

[0066] from Figure 2 It can be seen that the film of the anode interface material ink has good light transmittance, and the transmittance of the entire film is improved in the visible light wavelength range.

[0067] Example 4

[0068] The steps and parameters are the same as those in Example 1, except that m-methoxyaniline is replaced with the same molar amount of 4-methoxydiphenylamine to obtain a conductive polymer dispersion system (Pp-OCDBN:PWA:PMA), i.e., the anode interface material ink of Example 4.

[0069] Each 1 mL of the composite material ink contains 15.9 mg of poly-4-methoxydiphenylamine product, with a concentration of 15.9 mg / mL.

[0070] Example 5

[0071] The steps and parameters are the same as those in Example 3, except that the molar ratio of phosphotungstic acid to phosphomolybdic acid is changed to 1:1, i.e., 0.1 mmol of PWA and 0.1 mmol of PMA. A conductive polymer dispersion system (Pp-ODBN:PWA:PMA-2) is obtained, i.e., the anode interface material ink of Example 5.

[0072] Example 6

[0073] The steps and parameters are the same as those in Example 3, except that the molar ratio of phosphotungstic acid to phosphomolybdic acid is changed to 5:1, i.e., 0.167 mmol of PWA and 0.033 mmol of PMA. A conductive polymer dispersion system (Pp-ODBN:PWA:PMA-3), i.e., the anode interface material ink of Example 6, is obtained.

[0074] Example 7 Application in an organic photovoltaic device based on a photosensitive active layer of a donor PM6 and an acceptor Y6

[0075] Preparation process of organic photovoltaic device using PM6 polymer as donor material and Y6 as non-fullerene acceptor material: on cleaned ITO, the composite material ink of Comparative Example 1, Comparative Example 2 and Example 3 is spin-coated on the ITO substrate by spin coating, the rotation speed is 3000rpm, and the time is 30s. Anneal at 150℃ for 12min in air atmosphere to form a dense anode interface layer film. Spin-coat the chloroform solution of PM6 and Y6 mixed in a ratio of 1:1.2 (W:W) on the cooled anode interface layer film, the rotation speed is 3000rpm, the time is 40s, and anneal at 85℃ in nitrogen atmosphere for 5min. After cooling, spin-coat 1.5mg / mL PDINN methanol solution on the active layer, the rotation speed is 3000rpm, the time is 30s, and no annealing is required. After the solvent evaporates naturally, use high vacuum thermal evaporation to deposit an Ag electrode with a thickness of about 100nm to obtain the organic solar cell. W / O represents no anode interface modification layer; Pp-ODBN:PWA represents the interface modification layer after spin coating of the composite material ink prepared in Comparative Example 1; Pp-ODBN:PMA represents the interface modification layer after spin coating of the composite material ink prepared in Comparative Example 2; Pp-ODBN:PWA:PMA represents the interface modification layer after spin coating of the composite material ink prepared in Example 3. After packaging, the JV curve of the device was measured in air, and the thermal stability curves of the two interface devices with better efficiency at 80°C were tracked. The results are as follows Figures 3-4 And as shown in Table 2.

[0076] Table 2 PM6:Y6 device data with poly(p-hydroxyphenylenediamine) as the interface material

[0077]

[0078] Figure 3 For the above organic solar cell at 100mW / cm 2 The JV curves were measured under the irradiation of an AM 1.5 solar simulator. It can be seen that the efficiency of the composite ink prepared by the present invention applied to solar cells is much higher than that of the device without an anode interface, indicating that the composite ink prepared by the present invention can be applied to solar cells, and the efficiency of the solar cell prepared by the composite ink prepared by the double oxidant used in the present invention is 17.86%, which is higher than the efficiency of the solar cell prepared by the composite ink prepared by the single oxidant, which is 9.39% and 16.64%.

[0079] Figure 4 It is a thermal stability curve of the photoelectric conversion efficiency of the above-mentioned organic solar cell at 80°C in air; it can be seen that the efficiency of the device made of PEDOT:PSS quickly drops to less than 80% of its initial efficiency within 10 hours of heating at 80°C, and the efficiency of the device made of Pp-ODBN:PMA drops to less than 80% of its initial efficiency after heating at 80°C for 30 hours. The composite ink Pp-ODBN:PWA:PMA prepared by the present invention can be applied to solar cells to effectively improve the thermal stability of the device, and can still maintain 80% of the initial efficiency after heating at 80°C for 46 hours.

[0080] Example 8 Application in an organic photovoltaic device based on a photosensitive active layer of a donor PM6 and an acceptor BTP-eC9

[0081] Preparation process of organic photovoltaic device using PM6 polymer as donor material and BTP-eC9 as non-fullerene acceptor material: On the cleaned ITO, the composite material ink of Comparative Example 1, Comparative Example 2 and Example 3 is spin-coated on the ITO substrate by spin coating, the speed is 3000rpm, and the time is 30s. Anneal at 150°C for 12min in an air atmosphere to form a dense anode interface layer film. The chloroform solution of PM6 and BTP-eC9 mixed in a ratio of 1:1.2 (W:W) is spin-coated on the cooled anode interface layer film at a speed of 3000rpm for 40s, and annealed at 85°C for 5min in a nitrogen atmosphere. After cooling, 1.5mg / mL PDINN methanol solution is spin-coated on the active layer at a speed of 3000rpm for 30s without annealing. After the solvent evaporates naturally, a Ag electrode with a thickness of about 100nm is thermally evaporated by high vacuum to obtain an organic solar cell. After packaging, the JV curve of the device was measured at room temperature. The results are shown in Table 3 and Figure 5 shown.

[0082] Table 3 PM6:BTP-eC9 device data with poly(p-hydroxyphenylenediamine) as the interface material

[0083]

[0084] from Figure 5 As can be seen from Table 3, the efficiency of solar cells prepared by using the composite ink prepared by the present invention and applied to the PM6:BTP-eC9 active layer system can reach 17.30%, which is higher than the efficiencies of 8.24% and 16.07% of solar cells prepared by the composite ink prepared by a single oxidant.

[0085] Example 9 Application in an organic photovoltaic device based on a photosensitive active layer of a donor PM6 and an acceptor L8-BO

[0086] Preparation process of organic photovoltaic device using PM6 polymer as donor material and L8-BO as acceptor material: On the cleaned ITO, the composite material ink of the above-mentioned comparative example 1 and embodiment 3 is spin-coated on the ITO substrate by spin coating at a rotation speed of 3000 rpm for 30 seconds. Anneal at 150°C in an air atmosphere for 12 minutes to form a dense anode interface layer film. Spin-coat a chloroform solution of PM6 and L8-BO mixed in a ratio of 1:1.2 (W:W) on the cooled anode interface layer film at a rotation speed of 3000 rpm for 40 seconds, and anneal at 85°C in a nitrogen atmosphere for 5 minutes. After it cools, spin-coat 1.5 mg / mL PDINN methanol solution on the active layer at a rotation speed of 3000 rpm for 30 seconds without annealing. After the solvent evaporates naturally, use high vacuum thermal evaporation to deposit an Ag electrode with a thickness of about 100 nm to obtain the organic solar cell, and measure its performance. The results are shown in Table 4 and Figure 6 shown.

[0087] Table 4 PM6:L8-BO device data with poly(p-hydroxyphenylenediamine) as the interface material

[0088]

[0089] from Figure 6 As can be seen from Table 4, the efficiency of solar cells using the composite ink prepared by the present invention and applied to the PM6:L8-BO active layer system can reach 17.27%, which is higher than the efficiencies of 9.20% and 16.37% of solar cells prepared by the composite ink prepared by a single oxidant.

[0090] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A conductive polymer dispersion system, characterized in that: A mixture of heteropolyacid compounds and aromatic monomer compounds are included, and the aromatic monomer compounds are subjected to oxidative polymerization to obtain the conductive polymer dispersion system; The heteropolyacid compound mixture includes a mixture of heteropolyacid compounds containing at least two elements selected from molybdenum, tungsten and vanadium; The molar ratio of any two heteropolyacid compounds is 1:10 to 10:1; The ratio of the total mole number of the heteropolyacid compound mixture to the mole number of the aromatic monomer compound is 10:1 to 1:

30.

2. The conductive polymer dispersion system according to claim 1, characterized in that: The molar ratio of any two heteropolyacid compounds is 1:1 to 5:

1.

3. The conductive polymer dispersion system according to claim 1, characterized in that: The aromatic monomer compound is one or more of aniline, thiophene, pyrrole, furan or benzene ring and its derivatives.

4. The conductive polymer dispersion system according to claim 1, characterized in that: When the heteropolyacid compound mixture is mixed with the aromatic monomer compound, the concentration of each heteropolyacid compound is 1 to 25 mg / mL.

5. The conductive polymer dispersion system according to claim 1, characterized in that: When the heteropolyacid compound mixture is mixed with the aromatic monomer compound, the concentration of the aromatic monomer compound is 0.1 to 50 mg / mL.

6. The conductive polymer dispersion system according to claim 1, characterized in that: In the conductive polymer dispersion system, the solvent is water and / or an alcohol solvent and / or an ether solvent.

7. An anode interface material ink for an organic optoelectronic device, characterized in that: The anode interface material ink for organic photoelectric devices is obtained by processing the conductive polymer dispersion system according to any one of claims 1 to 6, and the mass concentration of the aromatic polymer is 1 to 80 mg / mL.

8. The method for preparing the anode interface material ink for organic optoelectronic devices according to claim 7, characterized in that: The steps include: The conductive polymer dispersion system is purified and the filtrate is retained to obtain the conductive polymer dispersion system.

9. Use of the anode interface material ink for organic photoelectric devices according to claim 7 in preparing an anode interface layer thin film of an organic photoelectric device.

10. An organic solar cell, characterized in that: An anode interface layer thin film formed from the ink according to claim 8.

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