The most important thing about a single crystal, polycrystalline or SunPower solar panel is the inner cell, which may be a little thinner than hair. In order to protect the battery inside, glass, ETFE, pet and other surface materials are generally used for lamination and packaging. However, it can generally be called flexible solar panels. The surface materials are usually ETFE and pet. First of all, they have good light transmittance, which can ensure that the solar panels receive sunlight and can generate electricity normally. Secondly, ETFE and pet can maintain their original toughness after lamination.
Generally, flexible solar panels have certain requirements for bending. Flexible solar panels generally do not use single crystal and polycrystalline, because these two types of solar cells are too fragile, which are generally used or placed improperly, which is easy to cause internal fragmentation, and finally lead to insufficient power or failure to generate electricity. Therefore, generally, SunPower cells are used for flexible solar panels. Firstly, its conversion efficiency will be higher than that of single polycrystalline, and secondly, its bending degree is 15 ° -20 °.
In addition, there is a flexible solar panel, which is not common in the market now. It is called thin-film solar panel, which is not a conventional silicon chip CIGS. The biggest obstacle of such flexible solar panels is that their efficiency is much lower than that of rigid solar panels. The average efficiency of rigid solar panels today is about 16-20%. However, the efficiency of thin-film flexible solar panels is only 7-15%, which means that you need more flexible panels to produce the same power as rigid panels. This kind of thin film flexible solar panel is not only higher than that of single crystal polycrystalline solar panel, but also higher than that of SunPower solar panel.
Flexible solar panels may not be suitable for roof energy production, but they are a good choice for people who need lightweight and portable power supplies. Flexible solar panels are durable and light, making them ideal for small-scale, mobile applications, such as RV, boats, and other energy needs that do not require high power output. Compared with glass (rigid) solar panels, its weather resistance is relatively weak, and the service life of glass (rigid) solar panels will be longer.
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