The trouble with lead is that it is so useful ... and they claim that in theory a single-crystal form of their new material could exceed it by more than threefold 6. One of the key questions ...

The scientists concluded by saying that KGeCl 3 perovskite may be used for lead ... material with promising structural, electronic, optic, and thermoelectric properties across different crystal ...

US scientists have discovered a lead-free perovskite material with ferroelectric properties ... where one side of the crystal builds up positive charges and the other side builds up negative ...