Solar cell and method for manufacturing same
A technology of solar cells and manufacturing methods, applied in the direction of final product manufacturing, sustainable manufacturing/processing, circuits, etc., can solve problems such as process limitations of electroplating solar cells, and achieve the effect of reducing process time
Inactive Publication Date: 2018-06-05
MOTECH INDUSTRIES
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Problems solved by technology
[0003] However, the FBP plating process is limited to plating on p-type doped Si, and the LIP plating process is limited to n-type doped Si.
Therefore, the existing electroplating solar cell manufacturing process will be greatly restricted
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[0077] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0078] Please refer to figure 1 , which shows the flow of the solar cell manufacturing method according to the first embodiment of the present invention. The manufacturing method of the solar cell includes: step S100: providing a substrate, including a corresponding first silicon surface and a second silicon surface; step S110: forming a first passivation layer on the first silicon surface; step S120: Forming a first screen printing electrode on the first silicon surface; Step S130: Forming a first patterned groove on the first passivation layer to expose the first silicon surface; and Step S140: The first screen printing electrode is used as an electroplating contact, so that th...
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The invention discloses a solar cell and a method for manufacturing the same. The manufacturing method includes: providing a substrate including a first silicon surface and a second silicon surface opposite to each other; forming a first passivation layer on the first silicon surface; forming a first screen printing electrode on the first silicon surface; forming a first pattern slot on the firstpassivation layer to expose the first silicon surface; and enabling the first pattern slot to form a first electroplating metal layer in first electroplating liquid by regarding the first screen printing electrode as the electroplating connection point. According to the manufacturing method of the solar cell, the screen printing electrode is adopted as the electroplating connection point so that electroplating can be directly performed on a P-type silicon substrate or an N-type silicon substrate; and a front surface electrode and a rear electrode can be simultaneously electroplated, and the manufacturing time is reduced.
Description
technical field [0001] The present invention relates to a solar cell and its manufacturing method, and in particular to a solar cell and its manufacturing method, which uses a screen printing electrode as an electroplating contact to form an electroplating metal layer. Background technique [0002] One of the existing electroplating solar cell processes is to first use the back screen printing or sputtering process to form metal electrodes to make the back electrode, and then use the light induced electroplating (Light Induce Plating, LIP) process or forward bias electroplating (Forward bias plating, FBP) process to form metal electrodes to make front electrodes. [0003] However, the FBP plating process is limited to plating on p-type doped Si, and the LIP plating process is limited to n-type doped Si. . Therefore, the existing electroplating solar cell manufacturing process will be greatly restricted. [0004] Therefore, there is a need to provide a solar cell and a man...
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IPC IPC(8): H01L31/18H01L31/0224H01L31/068
CPCH01L31/022425H01L31/068H01L31/1804Y02E10/547Y02P70/50
Inventor 刘书岩李岳霖
Owner MOTECH INDUSTRIES