Method for processing optical active layer of polymer solar cell and polymer solar cell manufacturing method

Abstract

The invention discloses a method for processing an optical active layer of a polymer solar cell and a polymer solar cell manufacturing method. The polymer solar cell manufacturing method comprises the steps that with glass or flexible plastic serving as a substrate and a transparent conducting film serving as a front electrode, a soluble polythiophene and fullerene derivative blending system is established at indoor temperature in air to serve as the active layer, the volatilization rate of a solvent is regulated by regulating the relation among the indoor temperature, the alternative control spin-coating film formation rotating speed and the alternative control spin-coating film formation time, so that processing of the optical active layer is achieved under the condition that high-temperature heating is not needed, an optical active layer thin film obtained after processing is dried naturally in air, the polythiophene material P3HT is induced to achieve the self-assembly function, and the orderliness of the P3HT is improved. The method for processing the optical active layer of the polymer solar cell and the polymer solar cell manufacturing method have the advantages that the technology is simple, operation is easy, safety and stability are guaranteed, the cost is low, a protective gas atmosphere is not needed, heating annealing is not needed, manufacturing of the polymer solar cell can be completed in a controllable mode at room temperature, the polymer solar cell and the flexible substrate are compatible, and compared with a polymer solar cell manufactured through a conventional heating annealing and solvent annealing technology, the polymer solar cell manufactured through the method has better performance.

Description

technical field [0001] The invention relates to the field of polymer solar cells, in particular to a method for treating a photoactive layer of a polymer solar cell and a method for preparing the cell. Background technique [0002] Polymer solar cells are favored due to their unique advantages such as low cost, simple process, and compatibility with flexible substrates. With the continuous synthesis of new high-efficiency polymer donor and acceptor materials, the continuous optimization of device structures, and the deepening of research on the mechanism of polymer solar cells, the device performance of polymer solar cells has been greatly improved, and it is most likely to be the first to realize commercialize. In order to facilitate the diffusion and separation of excitons, as well as the transport of carriers, current high-efficiency polymer solar cells mostly adopt a bulk heterojunction structure, that is, the active layer is formed by physical blending of donors and ac...

AI Technical Summary

Problems solved by technology

Second: Because organic semiconductor materials are very sensitive to temperature, the window of optimal thermal annealing process conditions for organic batteries is very small, and the temperature and time of thermal annealing are difficult to control

Therefore, there are various problems and deficiencies in the existing photoactive layer treatment whether it is thermal annealing or solvent annealing.

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