Solar photovoltaic cells (photovoltaic cells for short) are used to directly convert the sun's light energy into electrical energy. According to the application requirements, a group of photovoltaic cells that achieve a certain rated output power and output voltage after a certain combination of solar cells is called a photovoltaic module. According to the size and scale of photovoltaic power plants, photovoltaic modules can form arrays of various sizes.

Photovoltaic modules are made of high-efficiency mono-crystalline silicon or polycrystalline silicon photovoltaic cells, high-transmittance tempered glass, anti-corrosion aluminum alloy multi-frame and other materials, and are manufactured using advanced vacuum lamination technology and pulse welding technology. A long service life is guaranteed even in the harshest environments.

What are the types of photovoltaic cells?

1. Classification by structure: can be divided into homojunction solar cells, heterojunction solar cells, Schottky solar cells.

2. Classification by material: it can be divided into silicon solar cells, sensitized nanocrystalline solar cells, organic compound solar cells, plastic solar cells, and inorganic compound semiconductor solar cells.

3. Classification according to the photoelectric conversion mechanism: it can be divided into traditional solar cells and exciton solar cells.

4. Classification by species: monocrystalline silicon photovoltaic cells, polycrystalline silicon photovoltaic cells, amorphous silicon photovoltaic cells, copper indium selenium photovoltaic cells, gallium arsenide photovoltaic cells, polymer photovoltaic cells.

(1) Monocrystalline silicon photovoltaic cells

Monocrystalline silicon photovoltaic cell is a kind of photovoltaic cell with the earliest development, the highest conversion rate and the largest output. The conversion efficiency of monocrystalline silicon photovoltaic cells has reached an average of 16.5% in my country, and the highest conversion efficiency recorded in the laboratory has exceeded 24.7%. This photovoltaic cell generally uses high-purity monocrystalline silicon rods as raw materials, and the purity requirement is 99.9999%.

(2) Polycrystalline silicon photovoltaic cells

Polycrystalline silicon photovoltaic cells are photovoltaic cells based on polycrystalline silicon materials. Since the polysilicon material is mostly cast instead of the drawing process of monocrystalline silicon, the production time is shortened and the manufacturing cost is greatly reduced. In addition, monocrystalline silicon rods are cylindrical, and the photovoltaic cells made of them are also wafers, so the plane utilization rate after forming photovoltaic modules is low. Compared with monocrystalline silicon photovoltaic cells, polycrystalline silicon photovoltaic cells appear to have certain competitive advantages.

(3) Amorphous silicon photovoltaic cells

Amorphous silicon photovoltaic cells are a new type of thin-film cells made from amorphous silicon. Amorphous silicon is a semiconductor with an amorphous crystal structure. Photovoltaic cells made with it are only 1 micron thick, which is equivalent to 1/300 of monocrystalline silicon photovoltaic cells. Compared with monocrystalline silicon and polycrystalline silicon, its manufacturing process is greatly simplified, the silicon material consumption is less, and the unit power consumption is also much lower.

(4) Copper Indium Selenium Photovoltaic Cell

Copper indium selenide photovoltaic cells are semiconductor thin films deposited on glass or other cheap substrates based on copper, indium and selenium ternary compound semiconductors. Due to the good light absorption performance of copper indium selenium cells, the film thickness is only about 1/100 of that of monocrystalline silicon photovoltaic cells.

(5) GaAs photovoltaic cells

Gallium arsenide photovoltaic cell is a III-V compound semiconductor photovoltaic cell. Compared with silicon photovoltaic cells, gallium arsenide photovoltaic cells have high photoelectric conversion efficiency, the theoretical efficiency of silicon photovoltaic cells is 23%, while the conversion efficiency of single-junction gallium arsenide photovoltaic cells has reached 27%; it can be made into thin films and ultra-thin Solar cells also absorb 95% of sunlight, and gallium arsenide photovoltaic cells only need a thickness of 5-10 μm, while silicon photovoltaic cells need to be greater than 150 μm. Cadmium Telluride Photovoltaic Cells Cadmium Telluride is a compound semiconductor with a band gap optimal for photoelectric energy conversion

(6) Polymer photovoltaic cells

Polymer photovoltaic cells use different redox potentials of different redox polymers to perform multi-layer composites on the surface of conductive materials to make unidirectional conductive devices similar to inorganic PN junctions.

Powered & Powerful!

Distributors and OEM business are warmly welcome.

Get connected with professional Solar battery manufacturer,

www.gembattery.com

sales@gembattery.com

WhatsApp: +8615959276199