Preparation method of solar cell based on metal flexible substrate

Abstract

The invention discloses a preparation method of a solar cell based on a metal flexible substrate, and the method comprises the following steps: providing a first substrate, and manufacturing and forming a barrier layer on the first substrate; manufacturing and forming a battery epitaxial layer on the barrier layer; providing a second substrate, and fixing the second substrate on the cell epitaxiallayer; sequentially removing the first substrate and the barrier layer; processing the cell epitaxial layer by adopting a front cell process; providing a third substrate, and fixing the third substrate on the cell epitaxial layer; removing the second substrate; manufacturing and forming a flexible conductive substrate on the cell epitaxial layer; and removing the third substrate. The invention discloses a preparation method of a solar cell based on a metal flexible substrate, a PI bonding technology is replaced by growing the flexible conductive substrate, the process is simplified, and meanwhile, the possibility of cell damage is greatly reduced, and positive and negative electrodes of the cell can be on different sides, thereby increasing the front light absorption area of the cell.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method for preparing a solar battery based on a metal flexible substrate. Background technique [0002] In recent years, with the development of science and technology, there is an urgent demand for flexible solar cells in the aerospace field, military weapons and equipment, and in the civilian market. [0003] Flexible thin-film solar cells refer to removing conventional semiconductor substrates and replacing them with ultra-thin flexible material substrates, so as to achieve a substantial increase in the weight-to-power ratio of solar cells while ensuring high conversion efficiency. The traditional III-V rigid battery has always been the main force in the space field because of its ultra-high conversion efficiency and radiation resistance performance, but its material is brittle and hard, and its mass is large, which limits its application range to a certain extent. . On ...

AI Technical Summary

Problems solved by technology

These processes involve multiple bonding processes, not only the process is complicated, the process conditions are harsh, and it is very easy to cause damage to the battery surface

The flexible substrate on the bond is generally insulated, and the battery electrodes can only be on the same side, which will increase the shading area of ​​the battery surface to a certain extent and reduce its photoelectric conversion efficiency.

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