Bulk heterojunction solar battery polymer donor material, synthesis and use method

Abstract

The invention relates to a bulk heterojunction solar cell polymeric donor material, and the synthesis and the application method thereof. The bulk heterojunction solar cell polymeric donor material can acquire a series of polymeric donor materials having arrow energy gap using thiophene, naphthalimide, fluorine and carbazole as main structural unit by Suzuki or Stille coupling reaction. The polymer doner materials are a series of alternate polymers of fluorine, carbazole, thiophene and naphthalimide condensed ring derivative. The core domain of the polymer is condensed ring monomer obtained by dehydration condensation of diamin derivative and acid anhydride derivative. The polymer also contains long chain fatty alkane for improving polymer solubility in main chain thereof. In polymerization reaction late stage, end blocking method is employed to improve the photo and thermal stability of the polymer. The bulk heterojunction solar cell polymeric donor material is used together with 1-(3-methoxycarbonyl)propyl-1-benzene[6, 6]C61 for preparing bulk heterojunction solar cell having excellent performance by solution spin coating method or for preparing other organic electronic devices such as organic light emitting diodes, information electrical storage devices, and organic field-effect transistors.

Description

technical field [0001] The invention belongs to the field of organic photoelectric conversion functional materials and devices, in particular to a bulk heterojunction solar cell polymer donor material and a synthesis method thereof. Background technique [0002] With the global energy demand increasing year by year, the effective utilization of renewable energy has become a major problem to be solved urgently. Most of the energy used now comes from the exploitation of fossil fuels, including oil, natural gas and coal, etc. However, these resources are very limited. Therefore, the development of new energy and energy materials is a major issue that our country must solve in the 21st century. Primary energy such as solar energy, biomass energy, nuclear energy (new reactor), wind energy, geothermal energy, and ocean energy, and hydrogen energy in secondary energy are considered representatives of new energy. Among them, solar energy, which accounts for more than 99% of the to...

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Problems solved by technology

Although the energy conversion efficiency of bulk heterojunction solar cells based on fullerene and polythiophene has reached about 6.5%, and ...

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