Fabrication method of solar cells based on metal flexible substrates

Abstract

The invention discloses a method for preparing a solar cell based on a metal flexible substrate, comprising the following steps: providing a first substrate, and forming a barrier layer on the first substrate; forming a cell on the barrier layer epitaxial layer; provide a second substrate, and fix the second substrate on the battery epitaxial layer; sequentially remove the first substrate and the barrier layer; process the battery epitaxial layer by using a front cell process ; providing a third substrate, and fixing the third substrate on the battery epitaxial layer; removing the second substrate; forming a flexible conductive substrate on the battery epitaxial layer; removing the first Three substrates. The invention discloses a method for preparing a solar cell based on a metal flexible substrate. The growth of a flexible conductive substrate replaces the PI bonding technology, which not only simplifies the process, but also greatly reduces the possibility of battery damage; the positive and negative electrodes of the battery can be different. side, increasing the frontal light-absorbing area of ​​the battery.

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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