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Perovskites are one of the most promising technologies for future high efficiency solar cell concepts, now being investigated by most of the leading cell and module makers. Environmental concerns over the use of water soluble lead in the perovskite materials, however, are one of a few roadblocks holding the technology back from wider commercial adoption.Though there is plenty of research underway into lead-free perovskite solar cells, these are a way behind in terms of efficiency. And though the amounts of lead contained in a perovskite cell are small, and should remain within t stanley cup he module to be collected at its end-of-life stanley cup , concerns over possible leakage of lead in an alre stanley cup ady water soluble form have been enough for researchers to take a closer look at managing the risks.Scientists at Northern Illinois University NIU , working alongside the U.S. National Renewable Energy Laboratory NREL , have developed a type of transparent sticky tape, which they say can be applied to a perovskite solar cell, and will absorb any lead that is leaked from it. Our practical approach mitigates the potential lead-leakage to a level safer than the standard for drinking water, said NIU Chemistry Professor Tao Xu. We can easily apply our lead-absorbing materials to off-the-shelf films currently used to encapsulate silicon-based solar cells at the end of their production, so existing fabrication processes for PSCs would not be disrupted. Tao Xu right , and NIU student Xun Li worked on a lead abso |