Lead halides are used extensively to prepare perovskite-based devices but it is less known that lead halides can also form luminescent complexes in solvents. Using polyethylene glycol as a solvent, a lead bromide complex with a photoluminescence quantum yield over 20% is obtained and the photoluminescence peak can be shifted around 50 nm with different alkylammonium bromides.
S. Chin, J. W. Choi, Z. Hu, L. Mardegan, M. Sessolo and H. J. Bolink, J. Mater. Chem. C, 2020, 8, 15996 DOI: 10.1039/D0TC04057F
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