Crystalline silicon battery assembly containing quantum cutting coating and preparation method thereof

Abstract

The invention relates to a crystalline silicon battery assembly containing a quantum cutting coating. A layer of perovskite quantum dot material with a light down-conversion function is deposited on the surface of the crystalline silicon assembly or the top packaging glass of the crystalline silicon assembly. The absorption visible light (550 nm-560 nm) which cannot be absorbed by the crystallinesilicon assembly is down converted into the infrared light which can be absorbed by the crystalline silicon assembly, so that the absorption of the crystalline silicon assembly to the infrared light is increased, and the energy conversion efficiency of the crystalline silicon assembly is improved by about 10%. The invention further discloses a preparation method of the crystalline silicon batteryassembly containing the quantum cutting coating, and the preparation method is simple in preparation process and suitable for mass production.

Description

technical field [0001] The invention belongs to the technical field of preparation of crystalline silicon solar cells, and in particular relates to a crystalline silicon cell component containing a quantum tailoring coating and a preparation method thereof. Background technique [0002] At present, in the market, crystalline silicon solar cell components still account for at least 85% of the total, but it is difficult to further improve the efficiency of crystalline silicon components. In recent years, perovskite cells and crystalline silicon cells have been developed to make stacked cells. The preparation process is complicated, and there is a certain loss of efficiency for the bottom crystalline silicon cells. The mineral solar cell enters the silicon cell at the bottom and is absorbed by the silicon cell, so the perovskite solar cell on the top must be transparent or translucent, resulting in the loss of the efficiency of the top perovskite solar cell and the bottom silic...

AI Technical Summary

Problems solved by technology

[0002] At present, in the market, crystalline silicon solar cell modules still account for at least 85%, but it is difficult to further improve the efficiency of crystalline silicon solar modules

In recent years, perovskite cells and crystalline silicon cells have been developed to make stacked cells. The preparation process is complicated, and there is a certain loss of efficiency for the bottom crystalline silicon cells. The mineral solar cell enters the silicon cell at the bottom and is absorbed by the silicon cell, so the perovskite solar cell on the top must be transparent or translucent, resulting in the loss of the efficiency of the top perovskite solar cell and the bottom silicon solar cell

[0003] When the incident light irradiates the solar cell, the photons passing through the cell can be absorbed when the energy is larger than the band gap of the light-absorbing material, but cannot be absorbed when the energy is much larger than the band gap of the material, resulting in inevitable energy loss

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