Perovskite Materials Can Recyle Light To Boost Solar Efficiency

Scientists at St John's College, University of Cambridge, have discovered that a highly promising group of materials known as hybrid lead halide perovskites can recycle light - a finding that they believe could lead to large gains in the efficiency of solar cells. The research shows that perovskite cells have the extra ability to re-absorb these regenerated photons - a process known as "photo recycling.2 This creates a concentration effect inside the cell, as if a lens has been to focus lots of light in a single spot. According to researchers, this ability to recycling photons could be exploited with relative ease to create cells capable of pushing the limits of energy efficiency in solar panels.