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Results for 400 watt solar panel
Solar panel is a device that directly or indirectly converts solar radiation energy into electrical energy through photoelectric effect or photochemical effect by absorbing sunlight. The main material of most solar panels is "silicon". Compared with ordinary batteries and rechargeable batteries, solar batteries are green products that are more energy-saving and environmentally friendly. You can buy 400 watt solar panel on AliExpress!
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At present, crystalline silicon materials (including polycrystalline silicon and monocrystalline silicon) are the most important photovoltaic materials, with a market share of more than 90%, and will still be the mainstream material for solar cells for a long period of time in the future.
Cu (In, Ga)Se2 is a kind of solar light absorbing material with excellent performance. It has a gradient energy band gap (the energy level difference between the conduction band and the valence band) and multiple semiconductor materials, which can expand the solar absorption spectrum range, thereby improving photoelectric conversion efficiency. Based on it, it is possible to design thin-film solar cells whose photoelectric conversion efficiency is significantly higher than that of silicon thin-film solar cells. The achievable photoelectric conversion rate is 18%. Moreover, this type of thin-film solar cell has no performance degradation effect (SWE) caused by light radiation, and its photoelectric conversion efficiency is about 50-75% higher than that of commercial thin-film solar panels. It has the world's highest level of photoelectric conversion efficiency among solar cells.
Monocrystalline silicon
The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 18%, and the highest reaches 24%. This is the highest photoelectric conversion efficiency among all types of solar cells, but the production cost is so high that it cannot be widely used. Because monocrystalline silicon is generally packaged with tempered glass and waterproof resin, it is durable and has a service life of up to 25 years.
Polysilicon
The manufacturing process of polycrystalline silicon solar cells is similar to that of monocrystalline silicon solar cells, but the photoelectric conversion efficiency of polycrystalline silicon solar cells is much lower, and its photoelectric conversion efficiency is about 16%. In terms of production cost, it is cheaper than monocrystalline silicon solar cells, the material is easy to manufacture, saves power consumption, and the total production cost is low, so it has been greatly developed. In addition, the service life of polycrystalline silicon solar cells is shorter than that of monocrystalline silicon solar cells. In terms of cost performance, monocrystalline silicon solar cells are slightly better.
Amorphous silicon
Amorphous silicon solar cell is a new type of thin-film solar cell that appeared in 1976. It is completely different from monocrystalline silicon and polycrystalline silicon solar cells. The process is greatly simplified, the consumption of silicon materials is small, and the power consumption is lower. It's main The advantage is that it can generate electricity even in low light conditions. However, the main problem of amorphous silicon solar cells is that the photoelectric conversion efficiency is low, the international advanced level is about 10%, and it is not stable enough. As time goes by, its conversion efficiency decays.
Multi-component
A multi-component solar cell refers to a solar cell that is not made of a single element semiconductor material. There are many kinds of research in various countries, most of which have not yet been industrialized, mainly in the following categories: a) cadmium sulfide solar cells b) gallium arsenide solar cells c) copper indium selenide solar cells (new multi-bandgap gradient Cu (In, Ga) Se2 thin film solar cell).
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