Abstract
Thin-film silicon solar cell technology is one of the promising photovoltaic (PV) technologies for delivering low-cost solar electricity. Twelve percent of the accumulated 27.2GW produced in 2010 was due to thin-film PV and a little less than half of this was amorphous and microcrystalline silicon PV. At an average efficiency of 6–7%, his is an annual output of 21km2 of thin-film Si solar cells. It is expected that the tandem amorphous/microcrystalline silicon modules will take over in near future. Solar cell structures based on thin-film silicon for obtaining high efficiency are presented. In order to increase the absorption in thin absorber layers, novel approaches for tandem solar cells and for photon management are developed. Module production and application areas are also described.
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