Household solar cell shrapnel

Household solar cell shrapnel
Solar shrapnel is the main material in solar cell module. There is a blue antireflection film on the surface of the solar cell, and there are silver white electrode grid lines. Many of the thin grid lines are the leads from the surface electrode of the battery shrapnel to the main grid line. The two silver white lines with a wider width are the main grid line, also known as the electrode line or upper electrode. There are also two (or intermittent) silver white main grid lines on the back of the battery shrapnel, called lower electrode or back electrode.
The connection between the battery shrapnel and the battery shrapnel is realized by welding the interconnection bar to the main grid line. Generally, the front electrode wire is the negative electrode wire of the battery spring piece, and the back electrode wire is the positive wire of the battery spring piece. The output peak voltage between the positive and negative electrodes of a single solar cell is 0.48-0.5v regardless of its area (whole or cut into small pieces). The area of the cell is directly proportional to the output current and power. The larger the area, the greater the output current and power.
Qualified solar shrapnel should have the following characteristics.
(1) High efficiency and stable photoelectric conversion
(2) The advanced diffusion technology is used to ensure the uniformity of conversion efficiency in all parts of the chip.
(3) By using advanced PECVD film forming technology, dark blue silicon nitride antireflective film is plated on the surface of the cell, which has uniform and beautiful color.
(4) High quality silver and silver aluminum paste is used to make back field and grid wire electrodes to ensure good conductivity, reliable adhesion and good electrode solderability.
(5) High precision and high precision screen printing for solar cells.