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Nickel slurry for positive blocking spreading layer electrode of crystal silicon solar battery and preparation method thereof

A technology of crystalline silicon solar cells and diffusion resistance layers, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc. problems such as large thermal damage, to achieve the effects of low diffusivity, low cost, and good electrical conductivity

Inactive Publication Date: 2017-01-04
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of preparing an oxide layer as a diffusion barrier layer increases the process steps, and the oxidation process temperature of crystalline silicon solar cells is above 900°C, which causes great thermal damage to silicon wafers and reduces the electrical performance of solar cells.

Method used

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  • Nickel slurry for positive blocking spreading layer electrode of crystal silicon solar battery and preparation method thereof
  • Nickel slurry for positive blocking spreading layer electrode of crystal silicon solar battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Put 14wt% of the organic vehicle in a container, place the container in a constant temperature water tank with a temperature of 60° C., and continuously stir the organic vehicle in the container at a rate of 180 rpm, and heat and stir for 10 hours. Add 85wt% nano-nickel powder at a rate of 5g / min to prepare mixture a. Wherein, the particle diameter of nanometer nickel powder is 500~800nm, and purity is greater than 99%; Polyamide wax, 6wt% lecithin, 5wt% tributyl phosphate, 4wt% polyethylene glycol composition, diethylene glycol butyl ether, tributyl citrate, ethyl cellulose, polyamide wax , lecithin, tributyl phosphate and polyethylene glycol are mixed evenly in proportion, placed in a constant temperature container at 80°C, and stirred for 5 hours.

[0029] (2) The temperature of the constant temperature water tank is increased to 80°C, and the mixture a prepared in step (1) in the container is constantly stirred at a rate of 200 rpm. After heating and stirring f...

Embodiment 2

[0033] (1) Put 10 wt% of the organic vehicle in a container, place the container in a constant temperature water tank with a temperature of 70° C., and continuously stir the organic vehicle in the container at a rate of 140 rpm, and heat and stir for 5 hours. Add 85wt% nano-nickel powder at a rate of 20g / min to prepare mixture a. Wherein, the particle diameter of nanometer nickel powder is 500~800nm, and purity is greater than 99%; Polyamide wax, 6wt% lecithin, 5wt% tributyl phosphate, 4wt% polyethylene glycol composition, diethylene glycol butyl ether, tributyl citrate, ethyl cellulose, polyamide wax , lecithin, tributyl phosphate and polyethylene glycol are mixed evenly in proportion, placed in a constant temperature container at 80°C, and stirred for 5 hours.

[0034] (2) The temperature of the constant temperature water tank is increased to 90°C, and the mixture a prepared in the step (1) in the container is constantly stirred at a rate of 160 rpm. After heating and stirr...

Embodiment 3

[0038] (1) Put 10 wt% of the organic vehicle in a container, place the container in a constant temperature water tank with a temperature of 80° C., and continuously stir the organic vehicle in the container at a rate of 90 rpm. After heating and stirring for 1 hour, Add 89wt% nano-nickel powder at a rate of 30g / min to prepare mixture a. Wherein, the particle diameter of nanometer nickel powder is 500~800nm, and purity is greater than 99%; Polyamide wax, 6wt% lecithin, 5wt% tributyl phosphate, 4wt% polyethylene glycol composition, diethylene glycol butyl ether, tributyl citrate, ethyl cellulose, polyamide wax , lecithin, tributyl phosphate and polyethylene glycol are mixed evenly in proportion, placed in a constant temperature container at 80°C, and stirred for 5 hours.

[0039] (2) The temperature of the constant temperature water tank is raised to 100° C., and the mixture a prepared in step (1) in the container is constantly stirred at a rate of 120 rpm. After heating and st...

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Abstract

The invention discloses nickel slurry for a positive blocking spreading layer electrode of a crystal silicon solar battery. The nickel slurry is composed of 85-95 wt% of nanometer nickel powder, 1-5 wt% of glass powder and 4-14 wt% of organic carrier. The nickel slurry is prepared by placing an organic carrier in a constant-temperature container to heat and stir, orderly adding the nanometer nickel powder and the glass powder in the container, and then placing the prepared mixture in a three-roll mill to grind; then filtering by a silk screen. The nickel slurry is preset at the positive face of the crystal silicon battery and dried to obtain a blocking spreading layer nickel electrode; the blocking spreading layer nickel electrode used as the positive nickel / copper / aluminum / tin base metal composite electrode of the crystal silicon solar battery can prevent copper atoms from spreading to silicon.

Description

technical field [0001] The invention relates to a nickel slurry used for electrodes of crystalline silicon solar cells and a preparation method thereof. Background technique [0002] Cost reduction is one of the important conditions for solar cells to be more widely used in the future. The reduction of battery cost mainly depends on the improvement of battery efficiency and the reduction of the cost of battery manufacturing materials. On the one hand, the improvement of photoelectric conversion efficiency increases the power generation power of photovoltaic cell modules per unit area, and correspondingly reduces the cost related to the power generation area. On the other hand, the reduction in the cost of materials used for cell preparation can also effectively reduce the cost of solar cells. After the 1980s, the improvement of cell efficiency was mainly due to the optimization of preparation technologies such as grid line electrodes and silicon emitters (Green, The path to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/16H01B1/22H01B13/00H01L31/0224
CPCH01B1/16H01B1/22H01B13/00H01L31/022425Y02E10/50
Inventor 李涛王文静
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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