Depiction of photon recycling inside the crystalline structure of perovskite. Credit: Criss Hohmann
Scientists have discovered that a highly promising group of materials known as hybrid lead halide perovskites can recycle light which could lead to large gains in the efficiency of solar cells. As well as being cheap and easy to produce, perovskite solar cells have, in the space of a few years, become almost as energy-efficient as silicon – the material currently used in most household solar panels.
By showing that they can also be optimised to recycle light, the new study suggests that this could just be the beginning...
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