A silver paste containing spheroidized glass powder and a crystalline silicon solar cell made of the silver paste

A technology for spheroidizing glass powder and spheroidizing glass, applied in the field of solar cells, can solve the problems of uneven melting of glass powder, etc., and achieve the effects of improving photoelectric conversion efficiency, uniform and fine particles, and uniform melting

Active Publication Date: 2021-12-14
浙江奕成科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the problem of inhomogeneous fusion of glass powder, the application provides a silver paste containing spheroidized glass powder and a crystalline silicon solar cell made of the silver paste

Method used

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  • A silver paste containing spheroidized glass powder and a crystalline silicon solar cell made of the silver paste
  • A silver paste containing spheroidized glass powder and a crystalline silicon solar cell made of the silver paste
  • A silver paste containing spheroidized glass powder and a crystalline silicon solar cell made of the silver paste

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0034] Preparation of spheroidized glass powder: lead oxide, tellurium dioxide, bismuth trioxide, di Silicon oxide, zinc oxide, calcium oxide, lithium oxide, sodium oxide, copper oxide, molybdenum trioxide, tungsten trioxide, titanium dioxide and magnesium oxide are mixed evenly, heated and melted until clarified, poured into a tablet machine, cooled and pressed rapidly to form Glass flakes, the glass flakes are lightly hit to break the glass flakes, and the glass fine particles are obtained by airflow crushing. After cooling, the airflow enters the cyclone separator for classification, and the finished product is collected at the discharge port to obtain spheroidized glass powder.

Embodiment 1

[0037] The application discloses a silver paste containing spheroidized glass powder, which includes the following raw materials: spheroidized glass powder, silver powder, organic carrier, additives, wherein the spheroidized glass powder adopts the spheroidized glass powder prepared in Preparation Example 1, organic The carrier is α-terpineol, the additive is polycarbonate diol, and the contents of each component are shown in Tables 1 and 2 below.

[0038] The crystalline silicon solar cell manufactured by using the above-mentioned silver paste, that is, use the above-mentioned silver paste on the battery substrate to screen-print and sinter the silver paste to obtain the front surface electrode and grid line of the solar cell panel, and obtain the desired solar cell.

Embodiment 2

[0040] The difference from Example 1 is that the organic carrier is a mixture of α-terpineol, polyethersulfone resin and hydroxyl silicone oil, and the contents of each component are shown in Tables 1 and 2 below.

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PUM

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Abstract

The application relates to the field of solar cell technology, and specifically discloses a silver paste containing spheroidized glass powder and a crystalline silicon solar cell manufactured with the silver paste. The silver paste containing spheroidized glass powder includes the following raw materials in weight percentage: 1-10% spheroidized glass powder, 75-91% silver powder, 5-20% organic vehicle, and 0.1-1% additive. The silver paste containing spheroidized glass powder of the present application adopts spheroidized glass powder as a raw material, and the spheroidized glass powder has a relatively regular spherical shape, and the particles are relatively uniform and fine. The powder wets well with the silver powder and the silicon wafer, reduces the uneven etching of SiNx, and improves the photoelectric conversion efficiency of the prepared crystalline silicon solar cell.

Description

technical field [0001] The application relates to the field of solar cell technology, more specifically, it relates to a silver paste containing spheroidized glass powder and a crystalline silicon solar cell manufactured with the silver paste. Background technique [0002] A crystalline silicon solar cell is an electronic component that converts sunlight energy into electrical energy. In order to improve the conversion efficiency of crystalline silicon solar cells, textures are usually formed on the surface of silicon wafers and an optical anti-reflection film with a certain thickness is deposited. On the surface of cast polycrystalline silicon solar cells, a layer of non-stoichiometric silicon nitride film (SiN X ). [0003] The front surface electrodes and grid lines of crystalline silicon solar cells are made of conductive silver paste through high-speed and high-precision screen printing, low-temperature drying, high-temperature sintering and other processes. The cond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/16H01B1/22H01L31/0224H01L31/05
CPCH01B1/16H01B1/22H01L31/022425H01L31/0512Y02E10/50
Inventor 吕步云邵奕兴陶刚义
Owner 浙江奕成科技有限公司
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