Organic solar cell based on polyfluorene cathode interface self-assembly anode plasma resonance effect and preparation method of organic solar cell

Abstract

The invention belongs to the technical field of polymer solar cells, and particularly relates to an organic solar cell based on the polyfluorene cathode interface self-assembly anode plasma resonance effect and a preparation method of the organic solar cell. According to the method, an amphipathic polyfluorene material with high conductivity serves a cathode transmission layer, interface contact with ITO is increased through self-assembly of the cathode transmission layer, the cathode transmission layer replaces a traditional TiO2 or ZnO inorganic transmission layer, interface combination is reduced, and the performance of the organic solar cell is improved; meanwhile, a vacuum evaporation method is adopted for directly arranging a layer of gold nanoparticles on an active layer in an evaporation mode, light scattering is increased by utilizing the surface plasma effect of the layer of gold nanoparticles, the light path is increased, then the light utilization rate is increased, and thus the performance of a device is improved. The efficiency of the organic solar cell is effectively improved through the method, and the method is of great reference significance for nanoimprint lithography and development of organic solar cells in the future.

Description

technical field [0001] The invention belongs to the technical field of organic solar cells, and in particular relates to an organic solar cell based on polyfluorene cathode interface self-assembled anode plasma resonance effect and a preparation method thereof. Background technique [0002] Organic solar cells have attracted more and more attention from researchers in recent years because of their unique advantages such as flexibility, bendability, low cost, and large-area printing production. It has been reported in the literature that inversion organic solar cells based on blend systems have high efficiency. However, for the inverted polymer organic solar cells based on inorganic oxides as the cathode transport layer, the inherent defects of the inorganic oxides and the shortcomings of the sol condensation method make the prepared cells have high carrier recombination and low excitation. Solving the shortcomings caused by the inorganic transport layer and further improving...

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Problems solved by technology

[0002] Organic solar cells have attracted more and more attention from researchers in recent years because of their unique advantages such as flexibility, bendability, low cost, and large-area printing production. It has been reported in the literature that inversion organic solar cells based on blend systems have high efficiency. However, for the inverted polymer organic solar cells based on inorganic oxides as the cathode transport layer, the inherent defects of the inorganic oxides and the shortcomings of the sol condensation method make the prepared cells have high carrier recombination and low excitation. Solving the shortcomings caused by the inorganic transport layer and further improving the battery efficiency are problems that researchers must face.

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