What material is the photovoltaic panel made of

       Photovoltaic panels, also called photovoltaic panels, also called solar panels, are assemblies of several solar cell modules assembled on a panel in a certain way, usually as a unit of a photovoltaic array. Single solar cells cannot be directly used as power sources. As a power source, several single cells must be connected in series and parallel and tightly packaged into components. The solar cell module ( also called solar panel ) is the core part of the solar power generation system and the most important part of the solar power generation system. Its function is to convert solar energy into electric energy, or send it to storage batteries for storage, or push the load to work. The quality and cost of solar panels will directly determine the quality and cost of the whole system.