Organic film solar battery capable of enhancing light absorption efficiency

Abstract

The invention provides an organic film solar battery capable of enhancing a light absorption efficiency. The organic film solar battery comprises: a transparent substrate (1); a transparent electrode (2), which is deposited on the glass substrate; a cavity transmission layer (3), which is spinnedly coated on the transparent electrode (2); a nanometer metal structure (4), which is prepared in the cavity transmission layer (3) and enables light absorption to be enhanced; a photolytic activity layer (5), which is manufactured by organic semiconductor high-molecular materials and is spinnedly coated on the surface of the cavity transmission layer (3); and a metal back electrode (6). According to the invention, on the basis of a design on parameters of a nanometer metal structure, a wave band of an electromagnetic wave in the sun lights is coupled and is penetrated into the film, wherein the wave band of the electromagnetic wave can be best absorbed by an organic material of a photolytic activity layer; a light absorption efficiency of an organic film solar battery is enhanced to the most degree; and a photoelectric conversion performance of the organic film solar battery is improved basically.

Description

technical field [0001] The invention relates to an organic solar cell, in particular to an organic thin film solar cell capable of improving light absorption efficiency. Background technique [0002] In recent years, human environmental problems have become increasingly serious, which provides a broad space for the development of solar energy in the future. As a device that can convert light energy into electrical energy, solar cells have naturally become the focus of most attention. Since the first solar cell was invented by Bell Labs in 1954, it has gone through three stages of development: crystalline silicon solar cells, thin-film solar cells, and new solar cells. The fundamental goal is to continuously reduce manufacturing costs and maximize photoelectric conversion efficiency. [0003] As one of the representatives of new solar cells, organic solar cells have attracted more and more attention from researchers from various countries in recent years due to their advantag...

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Problems solved by technology

[0007] Based on the deficiencies in the above-mentioned prior art, the technical problem to be solved by the present invention is: to overcome the problem of low light absorption efficiency of organic solar cells at the present stage, that is, to meet the requirements of the diffusion length of the organic photoactive layer material after reducing its thickness , resulting in serious technical problems such as insufficient light absorption and performance degradation of organic solar cells

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