Silicon solar cells were created in order to trap the energy from the sun and use it as a source of renewable energy. Today silicon solar cells continue to be the most used solar cells in solar panels. The reason this continues is due to the durable nature of the cells themselves and the efficiency with regards to the amounts of energy they can convert.
Other methods are being researched in order to decrease the cost associated with solar power generation however these are years in the making. If you are interested in saving money on your energy bills now, waiting around for technology probably isn