Jiangsu Caisheng New Energy Technology Co., Ltd.

What Are Solar Panels Made Of?

As a kind of clean energy, solar energy has become the mainstream and is used in various scenes of life. The common solar panels on the market are monocrystalline silicon solar panels, polycrystalline silicon solar panels and amorphous silicon solar panels. What are these solar panels made of? Next, I will give you a detailed introduction.

The manufacturing of common glass solar panels brings together 6 different parts, including silicon solar cells, metal frames, glass panels, standard 12V wires and buses. You can use DIY panels according to the following list.

1. Silicon solar cell (single crystal/polycrystalline/Sunpower)
Silicon solar cells use photovoltaic effect to convert solar energy into electrical energy, and they are welded together in a matrix structure between glass panels to interact with thin glass sheets to generate charges.

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2. Metal frame (usually aluminum alloy)
The metal frame of the solar panel can prevent bad weather or other dangerous conditions, and help to adjust the installation at the required angle. A standard solar panel has a glass shell in front of the panel to increase durability and protect silicon PV. Under the glass enclosure, the battery panel has an insulating enclosure and a protective backplane, which helps to limit the heat loss and humidity in the panel. The thermal insulation is particularly important because the increase in temperature will lead to a decrease in efficiency, thereby reducing the output of the solar panel.

3. Glass plate (tempered glass)
The outside toughened glass is usually 6-7mm thick (depending on the size of the solar panel). Although it is very thin, it plays an important role in protecting the silicon solar cell inside, and also plays an important role in the power generation of the solar panel, with a high light transmittance.

4. Busbar
The bus is used to connect parallel silicon solar cells. The bus is covered with a thin layer of solder for welding, and its thickness is enough to carry current.

Five key steps of DIY glass solar panel:
Making solar cells
Weld the solar cells together to form a panel
Install the back panel, front glass layer and frame
Install a junction box
Quality test


Post time: Sep-22-2022