Photovoltaic cell with self-radiating composite cathode buffer layer and preparation method thereof

Abstract

The invention discloses a photovoltaic cell with a self-radiating composite cathode buffer layer and a preparation method thereof. The organic thin film photovoltaic cell adopts an inverse structure, including a substrate (1), a transparent conductive cathode ITO (2), and a composite cathode buffer layer (3), photoactive layer (4), anode buffer layer (5), metal anode (6), wherein composite cathode buffer layer (3) is made of cathode buffer layer (31) and heat dissipation grid (32), at the cathode A heat dissipation grid (32) is embedded between the buffer layers (31), so that the heat dissipation grid (32) and the photoactive layer with high heat generation can be connected without affecting light absorption, increasing film thickness, and affecting carrier transmission. (4) In direct contact with the cathode buffer layer (31), and then induced to discharge to the outside. It can effectively discharge the heat of the organic thin film photovoltaic cell due to sunlight irradiation and not converted into electrical energy during operation, reduce the working temperature of the cathode, improve the photoelectric conversion efficiency of the device, and greatly increase the life and stability of the device.

Description

technical field [0001] The invention relates to the field of organic polymer photovoltaic cells, in particular to a photovoltaic cell with a self-radiating composite cathode buffer layer and a preparation method thereof. Background technique [0002] With the global energy demand increasing year by year, the effective use of renewable energy has become an urgent problem to be solved. At present, most of the energy used in the world comes from the extraction of fossil fuels, including oil, natural gas and coal. However, these resources are limited. Solar energy, which accounts for more than 99% of the total energy of the earth, has the advantages of inexhaustibility, inexhaustibility, and no pollution, so it has become one of the new energy sources developed and utilized by scientists from all over the world. Currently, active layer materials can be classified into inorganic semiconductor materials and organic semiconductor materials according to the different properties of...

AI Technical Summary

Problems solved by technology

These heat dissipation methods directly dissipate heat from the outside of the solar cell, and due to the particularity of the structure of the organic thin-film photovoltaic cell, the heat generated by the photoactive layer will be absorbed by other structural layers, and the heat that finally reaches the outside is less, so Only dissipating heat from the outside of the organic thin-film photovoltaic cell will cause heat to still exist inside the battery, directly damaging the various layers of the battery structure; The weight and its thickness are also undesirable for ultra-light and ultra-thin organic thin-film photovoltaic cells

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