Method for producing solar cell gate electrode

Abstract

The invention discloses a method for producing a solar cell gate electrode, which comprises the steps that a carborundum template with a grid line pattern is firstly produced, then the carborundum template and a solar cell substrate are aligned with each other, tightly attached and fixed, and a physical gas deposition method is applied to produce a gate electrode. The template material plasma enhanced chemical vapor deposition (FECVD)-carborundum (SiC) which is applied to the method has small stress, the line width of the produced solar cell gate electrode can be ensured, so the surface coverage rate is reduced; the electrode production process has smaller influencing factors, and is conveniently accurately controlled; the technology is simple, and the production efficiency is improved; and the SiC material has strong corrosion resistance, the template can be repeatedly used after being produced at one time, so the cost is lowered.

Description

technical field [0001] The invention relates to a preparation process of solar cell grid electrodes, belonging to the field of micromachining of solar photoelectrodes. Background technique [0002] With the over-exploitation and consumption of global fossil fuel resources, the development and efficient utilization of new energy has become an urgent matter. Among them, solar energy is favored because of its abundant sources, no need for transportation and clean energy. Solar cells are one of the main ways to effectively utilize solar energy. The main reasons for the widespread use of solar cells are their high production costs and low conversion efficiency. The most basic structure of a solar cell includes a PN junction, a front gate electrode and a back electrode. After the process of texturing, diffusion, etc., the PN junction is made, and according to the photovoltaic effect, it can already generate photoelectric current under light. The main function of the solar cell ...

AI Technical Summary

Problems solved by technology

(4] Frederik C. Krebs, "Polymer solar cell modules prepared using roll-to-roll methods: Knife-over-edge coating, slot-die coating and screen printing", Processing and Preparation of Polymer and Organic Solar Cells, Pages 465 ~475, Apr.2009) Due to the wide grid line, the shading area is increased, resulting in increased loss of the front electrode and reduced conversion efficiency of the battery

In the process of screen printing, a large amount of paste is required, and most of the paste will stay on the screen because it is located in the non-graphic area, resulting in waste of silver-containing paste and increased costs.

[0004] Although other methods for preparing solar cell electrodes can prepare grid lines with relatively thin line widths, the process is complicated and the process cost is high, so it is not suitable for mass production

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