Along with wind and geothermal, photovoltaic energy is one of the most promising sources of renewable energy. Photovoltaic devices work according to the capacity of the appropriately treated semiconductors, which convert solar energy into electricity. Research in this industry has taken enormous strides in increasing the energy efficiency of these devices and also reducing labour and costs. UV technology is being employed in some of the processes used for producing photovoltaic panels. This has contributed to an improvement in quality and efficiency, while reducing the production costs but maintaining a high performance end product.