Scientists in the U.S. and South Korea have identified what could be a new route to high-efficiency perovskite-silicon tandem solar cells. Through engineering negatively charged particles in the passivation layer, the group made a tandem cell with 26.7% efficiency. With further tweaks to the silicon layer they expect to be able to surpass 30%.
Scientists at Australian National University have achieved a 27.7% efficiency rate for mechanically stacked perovskite-silicon tandem cells.
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