Conventional Si solar cells have p-n junctions for the efficient separation of light-generated charge carriers.The p-n junction is normally formed by furnace diffusion, which is expensive and requires very high temperatures (~1000 ℃).Organic solar cells that arc created with conjugated polymers, which can be fabricated with inexpensive materials by using low temperature solution processes, have the potential to lower costs;however, the efficiency of organic solar cells is lower than Si-based devices.Therefore, hybrid solar cells that combine Si and conjugated polymers at low temperatures provide a possible alternative technology to simplify fabrication processes and reduce costs.