Inorganic surface passivation of PbS nanocrystals resulting in strong photoluminescent emission
Inorganic surface passivation of PbS nanocrystals resulting in strong photoluminescent emission
Strong photoluminescent emission has been obtained from 3 nm PbS nanocrystals in aqueous colloidal solution, following treatment with CdS precursors. The observed emission can extend across the entire visible spectrum and usually includes a peak near 1.95 eV. We show that much of the visible emission results from absorption by …