Method for printing identification code for solar battery and method for recording processing parameters of solar battery

Abstract

The utility model provides a method for printing identification code for a solar battery and a method for recording processing parameters of a solar battery. The method for printing identification code comprises the steps of: providing a batch of semi-finished products of the solar energy battery substrate, with the semi-finished products referring to the solar battery substrates having finished all the manufacturing procedures of the light absorbing surface; and printing the metal slurry upon the back side of the solar battery substrate in a net printing manner to form a first busbar, a second bus bar, and an identification code for identifying the wafers. Compared with the prior art, the method features simple manufacturing procedures, with no need for extra equipment cost. Moreover, when the yield of the solar battery drops down, the detection personnel can make analysis and find out problems according to the processing parameters of each solar battery substrate and properly adjust processing parameters to optimize the quality of the solar batter.

Description

technical field [0001] The present invention relates to a method for printing identification codes (identification) on solar cells, in particular to a method for simultaneously printing identification codes when screen-printing conductive adhesive solar cell surfaces and recording solar energy in combination with the identification codes. method for substrate process parameters. Background technique [0002] In recent years, due to the rise of environmental awareness and the gradual depletion of other energy sources, countries around the world have begun to pay attention to the utilization of renewable energy. Renewable energy includes resources that are not scarce from sources such as solar, wind, hydro or biomass. Taiwan is located in the subtropical zone and has abundant sunshine. Therefore, in Taiwan, the use of solar cells (solar cells) as the development of solar energy to improve the photoelectric conversion efficiency of solar energy has become the focus of vari...

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Problems solved by technology

However, during the preparation process, the parameters of the process may be slightly adjusted or slightly different according to different situations, such as: the concentration of ions in the diffusion process, the concentration of acid and alkali solutions, the etching time, etc.

[0005] If during the manufacturing process, due to a problem in one of the manufacturing processes, the yield of the entire batch of solar cells decreases, it is difficult to find out the problem of the corresponding wafer from the existing data and data analysis in a timely manner, making it difficult to readjust the manufacturing process. parameter, it has a certain degree of difficulty

In addition, for example, after the solar cells are shipped, the client finds the problem of defective products. Since the solar cells do not have an identification code, it is impossible to find out the problems that occurred in the corresponding manufacturing process, and of course there is no way to find out the corresponding improvement measures.

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