Fig. 2.

Characterizations of Ag–CsPbBr₃ nanocrystals (NCs). Typical TEM images of a neat CsPbBr₃ NCs and b Ag–CsPbBr₃ hybrid NCs (scale bar: 20 nm), respectively. c High-angle annular dark-field scanning TEM and d elemental mapping images for element Ag of Ag–CsPbBr₃ NCs at the same spot (scale bar: 10 nm). e Absorption spectra of neat CsPbBr₃ and Ag–CsPbBr₃ hybrid NCs. The absorption peak at ~424 nm is attributed to local mode of SPR. f Time-resolved PL traces recorded from neat CsPbBr₃ and Ag–CsPbBr₃ hybrid NCs, respectively