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Lead-free Solar Cells

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Recent advances in the field of photovoltaic technology have enabled production of low-cost high-efficiency solar cells. However these devices are based on lead-containing perovskite minerals which present a concern from an environmental point of view. Northwestern University researchers were able to solve this problem by designing and manufacturing a solar cell without the use of lead. Their novel methylamonium tin halide perovskite material is not only lead-free but also features the ideal optical band gap which makes it an efficient light harvesting material. This disruptive technological advance will further solar cell research by removing a critical concern about detrimental effects to the environment. Applications: 1) Solar energy conversion 2) Lead-free solar cells

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