Method for improving CIGS cell efficiency after laser scribing by vacuum adsorption positioning

Abstract

The invention discloses a method for improving CIGS cell efficiency after laser scribing by vacuum adsorption positioning. When a CIGS absorption layer is subjected to laser scribing, glass is fixed generally by a clamp, and in glass fixation, the clamp may damage a film layer and cannot catch the glass in scribing on the glass and thus the method utilizes a CIGS glass tangent laser scribing way and a vacuum adsorption positioning way to solve the above problem and concretely comprises the following steps of pushing the glass to a designated position, pressing against the glass by positioning pins, carrying out vacuum-pumping to catch up the glass by vacuum holes, and carrying out laser scribing after the glass is completely caught. The glass is fixed in the vacuum adsorption positioning way so that the damage produced by the clamp on the film surface is avoided and CIGS solar energy efficiency is improved by increasing of a power generation area.

Description

technical field [0001] This method is the CIGS scribing technology, which is the technical core of thin-film solar energy. Like amorphous silicon and microcrystalline silicon, CIGS needs to be cut into small pieces of cells for series power generation, which can increase the voltage and current of solar cells to improve power generation. efficiency, and in amorphous silicon and microcrystalline silicon, laser laser is used for scribing, while CIGS is mainly due to material problems. If laser scribing is used, the thermal effect will cause phase inversion of CIGS material, so pulse is used. The laser is used to scribing, and the frequency delay of the light output prevents CIGS from inverting due to high temperature. In addition, the vacuum adsorption positioning used in the present invention can save the use of clips to fix the glass and reduce the power generation area of ​​the glass. , so the solar energy efficiency can be improved. Background technique [0002] There has...

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Problems solved by technology

[0003] The main purpose of the present invention is to improve the CIGS battery efficiency after laser scribing by vacuum adsorption positioning. When the CIGS absorbing layer is laser scribing, the clip is most often used to fix the glass, and the clip may damage the film layer when fixing the glass. And when the glass is scribing, the clip may not be able to grasp the glass. Therefore, the present invention uses the Laser laser scribing on the CIGS glass to use tangent. The positioning method of vacuum adsorption is designed, and the glass is first pushed to the position, and The positioning pin is pressed against, and then the vacuum is turned on by the present invention, and the glass is sucked by the vacuum hole. When the glass is completely absorbed, the Laser laser can be used to start scribing, and the glass is fixed by the vacuum suction positioning method, and Avoid the problem of membrane surface damage caused by the use of clips, and also increase the power generation area to increase CIGS solar energy efficiency

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