Organic photovoltaic cell and preparation method thereof

Abstract

The invention discloses an organic photovoltaic cell and a preparation method thereof. The preparation method comprises the steps of S11, forming a transparent front electrode on a transparent substrate; S12, forming a transition layer on the transparent substrate, wherein the top of the transition layer is at least higher than the top of a back electrode; S13, patterning the transition layer to form at least one isolation frame, wherein each isolation frame defines a photovoltaic region, and each frame edge of the isolation frame is set to be wide at the upper part and narrow at the lower part in the height direction; S14, sequentially forming an organic photovoltaic layer and a back electrode on the whole surface of the transparent substrate; S15, etching away the isolation frame; and S16, forming an insulating layer on the transparent substrate and patterning to expose the local transparent front electrode and the local back electrode. According to the preparation method disclosed by the invention, mass production of the organic photovoltaic cell is realized, laser etching is not needed, only chemical etching is adopted, the obtained internode gap is less than 5 microns and is far smaller than the internode gap of laser etching, the etching efficiency is high, and the influence on the organic photovoltaic layer is very small.

Description

technical field [0001] The invention relates to the technical field of organic photovoltaic cells, in particular to an organic photovoltaic cell and a preparation method thereof. Background technique [0002] In recent years, a new type of thin-film solar cells has received extensive attention, namely organic solar cells. Compared with traditional solar cells, the main advantages of organic solar cells are simple process, low production cost and high conversion rate. At present, the organic solar cells that can generally be mass-produced are mainly single-cell organic solar cells, and in the process of mass production of multi-cell organic solar cells, due to the use of scraping and other methods for the organic photovoltaic layer, exposure and other methods cannot be used. It is difficult to perform patterning processing, but when mass-producing multi-section organic solar cells, it is necessary to determine the area size and strictly control the electrode position and the...

AI Technical Summary

Problems solved by technology

Among them, most of the existing conventional packaging materials are polyolefin (POE) or ethylene vinyl acetate copolymer (EVA), but the transmission rate of the packaging material to water vapor and oxygen is relatively high, and it will penetrate more water vapor and oxygen, etc. Substances that seriously affect the power generation performance of organic photovoltaic cells, and even cause battery components to fail

There is also the use of glass for sealing, but this will further increase the thickness of the organic photovoltaic cell

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