Preparation method of selective emitter battery

An emitter and selective technology, applied in photovoltaic power generation, circuits, electrical components, etc., can solve the problems of large damage area of ​​cells and insufficient uniformity of laser spot, etc., achieve low equipment cost, improve cell conversion efficiency, reduce The effect of damage area
CN111180530APending Publication Date: 2020-05-19TIANJIN AIKO SOLAR ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN AIKO SOLAR ENERGY TECH CO LTD
Publication Date
2020-05-19

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Abstract

The invention provides a preparation method of a selective emitter battery. The method comprises the steps of forming a PN junction through diffusion of a doping source and manufacturing a selective emitter through laser doping, and is characterized in that in the step of manufacturing the selective emitter through laser doping, enriching elements doped in a region by changing the energy and the light spot size of laser irradiating the region to be metalized on a silicon wafer, and forming the selective emitter. According to the preparation method of the selective emitter battery, the damage area of the laser to the battery piece is reduced by adjusting the energy of the laser and the size of a light spot, different doped regions of the SE in a grid line contact region and a non-contact region are realized, and meanwhile, the battery efficiency is improved.
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Description

technical field

[0001] The invention belongs to the technical field of solar cell preparation, and in particular relates to a method for preparing a selective emitter cell. Background technique

[0002] When non-renewable energy sources such as electricity, coal, and petroleum are frequently running out, and energy issues have increasingly become a bottleneck restricting the development of the international society and economy, more and more countries have begun to implement the "Sunshine Plan" to develop solar energy resources and seek new impetus for economic development. Some high-level nuclear research institutions in Europe have also begun to turn to renewable energy. Driven by the huge potential of the international photovoltaic market, the solar cell manufacturing industries of various countries are scrambling to invest huge sums of money and expand production in order to compete for a place.

[0003] With the continuous development of the photovoltaic industry, the ...

Claims

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