Annealing a film of CsPbBr3 nanocrystals (NCs) leads to the removal of surface ligands and ripening of the NCs below 200 °C. This results in a reduced photoluminescence quantum yield due to the formation of trap states while on the other hand the conductive properties of the films are stabilized, with a significantly stronger photocurrent after annealing.
F. Palazon, F. Di Stasio, S. Lauciello, R. Krahne, M. Prato and L. Manna, J. Mater. Chem. C, 2016, 4, 9179 DOI: 10.1039/C6TC03342C
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