Perovskite thin-film photovoltaic cell and manufacturing method thereof

Abstract

The invention relates to a perovskite thin-film photovoltaic cell and a manufacturing method of the perovskite thin-film photovoltaic cell. The perovskite thin-film photovoltaic cell is composed of a conducting transparent substrate, a perovskite light-absorbing layer, a hole transfer layer and a metal electrode. The perovskite thin-film photovoltaic cell has the advantages that the structure is quite simple, a traditional electron transfer layer which needs high-temperature sintering is omitted due to the fact that a perovskite material serves as the light-absorbing layer and achieves the electron transfer function, and a porous layer is not needed either; the perovskite material is high in light-absorbing performance, the whole cell is manufactured at a low temperature, the complicated processes such as high-temperature sintering are not needed, and therefore the manufacturing cost of the cell is effectively reduced; the great promotion function is achieved on the flexibility of the cell and the large-sized reel-to-reel printing manufacturing of the cell; the whole manufacturing technology of the cell is simple, the popularization of the technology is facilitated, high photoelectric converting efficiency (approximate to 14 percent) and good device stability are obtained particularly, and therefore the industrial application prospect is achieved.

Description

technical field [0001] The invention relates to a thin-film photovoltaic cell of a light-absorbing material with a perovskite structure and a preparation method thereof, belonging to the field of optoelectronic materials and devices. Background technique [0002] With the depletion of traditional fossil fuels and increasingly serious environmental problems, the demand for clean energy is becoming more and more urgent. Solar energy has great application value as a clean energy, and the development of a solar cell with high photoelectric conversion efficiency, simple process, low cost and high stability has great strategic significance. From traditional silicon solar cells to the third-generation solar cells represented by dye-sensitive solar cells and organic cells, rapid development has been achieved and some applications have also been obtained. Traditional silicon batteries are relatively expensive, and dye-sensitized batteries have many limitations in preparation technol...

AI Technical Summary

Problems solved by technology

Although it can be made on a flexible substrate, the ZnO electron transport layer is not resistant to acid and alkali. If it is actually used in industrial production, there will be problems with the long-term stability of the battery, and sometimes it may even react with perovskite.

All currently reported perovskite batteries require an electron transport layer. If there is no electron transport layer, the battery is basically inefficient, and the electron-hole recombination is very serious, resulting in very low efficiency.

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