Figure 8


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The luminescence excitation and emission spectra of the Zn(Tb)S NPs as a function of pH that is modified post-synthetically are shown in panels (a)–(c), respectively. Panel (d) summarizes the relative trend of ZnS and Tb3+ emissions in these NPs. The reversible nature of pH dependent effect is shown in panel (e). Panels (f) and (g) show the Tb3+ emission lifetime decay profiles and the trends of contributions from shorter-lived surface related and longer-lived core related lifetime components. (Adapted with permission from Reference 108, Copyright 2020 American Chemical Society).

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