Solar cell and manufacturing method of solar cell

Abstract

The invention provides a solar cell and a manufacturing method of the solar cell. The solar cell comprises a first solar cell layer, a second solar cell layer and a transparent insulating layer. The first solar cell layer comprises a first solar cell set which is formed by connecting one or more first-type solar cells in series, and the second solar cell layer comprises a second solar cell set which is formed by connecting one or more second-type solar cells in series. The transparent insulating layer is located between the first solar cell layer and the second solar cell layer, through holes or channels are formed in the transparent insulating layer, conductive materials are filled into the through holes or the channels, and then the first solar cell set and the second solar cell set are connected in parallel. The maximum power voltage at two ends of the first solar cell set is equal to the maximum power voltage at two ends of the second solar cell set. The solar cell is a mechanically-stacked multi-section laminated cell, so that current matching is unnecessary among the first-type solar cells and the second-type solar cells, a high photoelectric conversion rate is provided, monolithic integration can be automatically formed in the technological process, the manufacturing method is easy and convenient to use and low in cost.

Description

technical field [0001] The invention relates to an integrated solar cell module and a manufacturing method thereof, in particular to a solar cell capable of improving photoelectric conversion efficiency and a manufacturing method thereof. Background technique [0002] Research on solar cells as an important source of clean energy has been conducted for many years. So far, group IV materials such as single crystal silicon, polycrystalline silicon, amorphous silicon, amorphous silicon carbide (amorphous SiC), amorphous silicon germanium (amorphous SiGe), amorphous tin tin (amorphous SiSn), III-V Group composite materials such as GaAs, AlGaAs, InP, and II-VI group composite materials such as CdS, CdTe, Cu 2 S have been applied in the production of solar cells. [0003] In general, a good solar cell should have the following characteristics: high photoelectric conversion rate, low manufacturing cost, and short energy payback time. [0004] Solar cells made of monocrystalline ...

AI Technical Summary

Problems solved by technology

[0009] However, this new structure composed of different solar cell layers also brings a new problem

Since the two solar cell layers are connected in series, their currents are required to be designed to be equal. When the incident spectrum changes with time, weather, climate and other factors, the cells of different layers in the multi-junction laminated cell are directly connected in series. will not be able to maintain the current matching condition, and will not be able to achieve maximum energy yield

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