Method for testing and evaluating performance of front silver paste for solar cell

Abstract

The invention provides a method for testing and evaluating performance of front silver paste for a solar cell. The method includes following steps: 1, self-making a test printing pattern screen plate, and enabling the test printing pattern screen plate to have design line width and distance-variable test line arrangement matched with a production line; 2, coating the self-made test printing pattern screen plate with the front silver paste for the solar cell; 3, using a printer to print the front of the solar cell on a monocrystalline silicon wafer with a quarter plated with PE film by using the silver paste; 4, sintering the monocrystalline silicon wafer after being printed with the silver paste; 5, using a resistance tester to test line resistance of printed patterns on the sintered monocrystalline silicon wafer, and recording a line resistance testing numerical value; 6, comparing the line resistance testing numerical value acquired in the step 5 with a line resistance testing numerical value of a basic sample to complete evaluation on performance of the front silver paste for the solar cell. The method is simple to operate, low in testing cost, short in data reflection period, high in evaluation accuracy and capable of simulating printing line type of the cell production line.

Description

technical field [0001] The invention relates to photovoltaic technology, in particular to a method for testing and evaluating the performance of front silver paste for solar cells. Background technique [0002] In the photovoltaic industry, the electrical properties of the silver paste used on the front side of solar cells are closely related to the product. However, the cost of electrical performance evaluation is high, and the data reflection period is long, which is seriously inconsistent with the speed of new product development. Some new product experiments must wait until the previous experimental data is fed back, which seriously affects the development of experiments. [0003] The current electrical performance testing methods mainly include: [0004] A. Purchase a complete set of solar cell production equipment for electrical performance evaluation. The disadvantage of this method is that the cost of the entire set of equipment is high, the utilization rate of the ...

AI Technical Summary

Problems solved by technology

[0006] C. Send samples to solar cell manufacturers for electrical performance evaluation. The disadvantage of this method is that the number of experiments is limited, the reference value of experimental data is damaged, the experimental period is long, the experimental environment is unstable, the cost of slurry evaluation is high, and the sample is at least Make 500g