Are solar cell really helpful?
Here’s where science enters the picture. Two plates of pure silicon would not generate electricity in solar panels, because they have is no positive or negative charge. Solar panels are created by combining silicon with other elements that do have positive or negative charges. Phosphorus, for example, has five electrons to offer to other atoms. If silicon and phosphorus are combined chemically, the result is a stable eight electrons with an additional free electron along for the ride. It can\’t leave, because it is bonded to the other phosphorus atoms, but it isn\’t needed by the silicon. Therefore, this new silicon/phosphorus plate is considered to be negatively charged. In order for electricity to flow, a positive charge must also be created. This is achieved in solar panels by combining silicon with an element such as boron, which only has three electrons to offer. A silicon/boron plate still has one spot left for another electron. This means the plate has a positive charge. The two
