Because they can be reused by changing energy work power light is. The materials used have a low cost price is cheap, and, Silicon, which can be found in the world.
It can be utilized by converting light energy into electrical energy. The material has a low cost of silicon, which is cheaper and more common in the world.
Because it can be used by changing the light energy into electrical energy. The materials used are low cost silicon, which is cheap and is found in the world.