US researchers have used a supercomputer to discover a candidate for Pb-free perovskite solar cells – most solar perovskites contain Pb-halides, and are unstable in moist air. KBaTeBiO6 is the material, a bismuth-halide double perovskite that was the most promising of 30,000 candidate bismuth-containing oxides postulated by a team of engineers at Washington University in St ...

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