Tandem solar cells are more efficient
Monday, November 23, 2015 - 08:00
in Physics & Chemistry
Stacking two solar cells one over the other has advantages: Because the energy is "harvested" in two stages, and overall the sunlight can be converted to electricity more efficiently. Empa researchers have come up with a procedure that makes it possible to produce thin film tandem solar cells in which a thin perovskite layer is used. The processing of peroveskite takes place at just 50 degrees Celsius and such a process is potentially applicable for low cost roll-to-roll production in future.