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CN-122003085-A - Method for improving tensile property of organic photovoltaic active layer based on chlorinated plastic and application

CN122003085ACN 122003085 ACN122003085 ACN 122003085ACN-122003085-A

Abstract

The invention discloses a method for improving tensile property of an organic photovoltaic active layer based on chlorinated plastic and application thereof. Specifically, chlorinated plastics are introduced into a receptor blend as a function regulator to obtain an active layer solution, the solution is spin-coated on the surface of a PSS layer glass substrate, and after spin-coating is finished, thermal annealing treatment is carried out to form an organic photovoltaic active layer film, wherein the chlorinated plastics account for 5% -50% of the total mass of the organic photovoltaic material. The prepared organic photovoltaic active layer film can be further used for constructing a solar cell, and the micro-morphology of the active layer can be effectively regulated and controlled and intermolecular interaction force can be enhanced through modification of chlorinated plastic on the active layer, so that the cooperative optimization of mechanical property and photoelectric property is realized. The method of the invention not only can improve the stretching flexibility of the high-efficiency organic solar cell, but also can maintain and even improve the photoelectric conversion efficiency as much as possible, and has remarkable technical innovation and application popularization value.

Inventors

  • KE HUIZHEN
  • Lv Shuiwang
  • YE LONG
  • ZHANG PENGYUN

Assignees

  • 闽江学院

Dates

Publication Date
20260508
Application Date
20260204

Claims (10)

  1. 1. A method for improving the tensile property of an organic photovoltaic active layer based on chlorinated plastics is characterized in that the chlorinated plastics are used as functional additives to be added into an organic photovoltaic material consisting of an electron donor material and an electron acceptor material, wherein the chlorinated plastics account for 5% -50% of the total mass of the organic photovoltaic material, and the plastics comprise chlorinated polypropylene, chlorinated polyvinyl chloride, chlorinated nitrile rubber, chlorinated polyolefin, chlorinated polystyrene, chlorinated polyether ether ketone, chlorinated polyacrylate, chlorinated polyimide and chlorinated polyamide.
  2. 2. The method of claim 1, wherein the electron donor material comprises poly (3-hexylthiophene), polythiophene, polydithiophene benzodithiophene, PM6, D18, PBDB-T-2F, PTB-Th, polycarbazole, polyfluorene, poly (p-phenylenevinylene), poly (arylene vinylene), poly (p-phenylene), poly (arylene), porphyrins, and phthalocyanines.
  3. 3. The method of claim 1, wherein the electron acceptor material comprises methyl [6,6] -phenyl-C61-butyrate, [6,6] -phenyl-C71-butyrate, perylene imide derivatives, naphthalimide derivatives, BTP-eC9, L8-BO, Y6-BO, Y14, A-1, N3, SMA1, IT-4F, ITIC.
  4. 4. The method of claim 1, wherein the chlorinated plastic and the organic photovoltaic material are dissolved in an organic solvent respectively, the mixture is stirred for 3-5 hours at 30-70 ℃ to obtain an active layer solution, the solution is spin-coated on the surface of the PSS layer glass substrate, and after spin-coating is finished, thermal annealing treatment is carried out to form the organic photovoltaic active layer film.
  5. 5. The method according to claim 4, wherein the organic solvent is one or more of chloroform, chlorobenzene, dichlorobenzene, trichlorobenzene, toluene, xylene, tetrahydrofuran, and N, N-dimethylformamide.
  6. 6. The method of claim 4, wherein the thermal annealing is performed at a temperature of 80-200 ℃ for a time of 10-30min.
  7. 7. A stretchable organic photovoltaic active layer film is characterized in that the organic photovoltaic active layer film is prepared by the method of any one of claims 1-6.
  8. 8. The organic photovoltaic active layer film according to claim 7, wherein the thickness of the organic photovoltaic active layer film is 30-500nm.
  9. 9. A solar cell device is characterized in that the solar cell device is of a front device structure, a conductive substrate, a hole transport layer, an active layer, an electron transport layer and a metal electrode are sequentially arranged from bottom to top, or an inverted device structure is adopted, the conductive substrate, the electron transport layer, the active layer, the hole transport layer and the metal electrode are sequentially arranged from bottom to top, and the active layer solution in claim 4 is deposited on the surface of the hole transport layer or the electron transport layer to form a blending active layer.
  10. 10. The solar cell device according to claim 9, wherein the deposition method comprises one or more of spin coating, knife coating, printing.

Description

Method for improving tensile property of organic photovoltaic active layer based on chlorinated plastic and application Technical Field The invention belongs to the technical field of preparation of photovoltaic devices, and particularly relates to a method for improving tensile property of an organic photovoltaic active layer based on chlorinated plastics and application thereof. Background Organic Solar Cells (OSCs) have become a very potential next-generation photovoltaic device due to their advantages of flexibility, light weight, and low cost. With the increasing demand of flexible electronic products such as wearable devices, the development of organic photovoltaic films with excellent tensile properties has become a key direction for improving the comprehensive performance of devices. However, currently mainstream high performance OSC devices typically employ a blend system of a polymer donor and a small molecule acceptor. Although the system has higher photoelectric conversion efficiency, the system generally has inherent defects of insufficient mechanical strength, low elongation at break (crack initiation strain is generally less than 10%), and the like, so that the practical application value of the system in flexible application scenes is severely restricted. The prior art is currently mainly directed to improving the mechanical properties of films by introducing elastomers or constructing dynamic covalent bond networks. For example, attempts have been made to use polymer blends such as poly (3-hexylthiophene) (P3 HT) poly (ethylene terephthalate) (PET), poly [2, 6-bis (2-ethylhexyl) -4, 8-bis (2-ethylhexyl) -benzo [1,2-b:4,5-b '] thiadiene ] -2, 6-diyl poly (4, 9-dithieno [3,2-b:5,6-b' ] diazaanthracene), and the like, or to introduce elastomers such as Polyurethane (PU), styrene-ethylene-butadiene-styrene (SEBS), polydimethylsiloxane (PDMS), neoprene (CR), 2, 6-bis (4-azidobenzylidene) cyclohexanone, and the like, and crosslinking agents. Although these strategies can enhance the self-healing ability and tensile recovery of the active layer to some extent by physical or chemical means, they are often accompanied by a significant decrease in photoelectric conversion efficiency. Therefore, a new method for significantly improving the tensile properties of the active layer without significantly reducing the photoelectric conversion efficiency is needed. Disclosure of Invention In order to solve the technical bottleneck that the photoelectric conversion efficiency and the mechanical tensile property in the existing organic photovoltaic device are difficult to consider, the invention aims to provide a method for improving the tensile property of an organic photovoltaic active layer based on chlorinated plastics and application thereof. In order to achieve the above purpose, the invention adopts the following technical scheme: A method for improving the stretching performance of an organic photovoltaic active layer based on chlorinated plastics is to add the chlorinated plastics which are taken as functional additives into an organic photovoltaic material consisting of an electron donor material and an electron acceptor material, wherein the chlorinated plastics account for 5% -50% of the total mass of the organic photovoltaic material, and the plastics comprise chlorinated polypropylene, chlorinated polyvinyl chloride, chlorinated nitrile rubber, chlorinated polyolefin, chlorinated polystyrene, chlorinated polyether ether ketone, chlorinated polyacrylate, chlorinated polyimide and chlorinated polyamide. Further, the electron donor material includes poly (3-hexylthiophene), polythiophene benzodithiophene, polydithiophene benzodithiophene, PM6, D18, PBDB-T-2F, PTB7-Th, polycarbazole, polyfluorene, poly (p-phenylene vinylene), poly (arylene vinylene), poly (p-phenylene), poly (arylene), porphyrins, and phthalocyanines. Further, the electron acceptor material includes [6,6] -phenyl-C61-methyl butyrate, [6,6] -phenyl-C71-methyl butyrate, perylene imide derivatives, naphthalimide derivatives, BTP-eC9, L8-BO, Y6-BO, Y14, A-1, N3, SMA1, IT-4F, ITIC. Further, the chlorinated plastic and the organic photovoltaic material are respectively dissolved in an organic solvent, mixed and stirred for 3-5 hours at the temperature of 30-70 ℃ to obtain an active layer solution, the solution is spin-coated on the surface of the PSS layer glass substrate, and after spin-coating is finished, thermal annealing treatment is carried out to form the organic photovoltaic active layer film. Further, the organic solvent is one or more of chloroform, chlorobenzene, dichlorobenzene, trichlorobenzene, toluene, xylene, tetrahydrofuran or N, N-dimethylformamide. Further, the temperature of the thermal annealing treatment is 80-200 ℃ and the time is 10-30min. A stretchable organic photovoltaic active layer film, the organic photovoltaic active layer film is prepared by the method. Further, the thickness of the organic photovoltaic acti