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(a) PL spectra of the AIS-PEI/2MPA QDs prepared with a constant molar ratio of Ag/In 1/4, cations/coating 1/5, and different molar ratios of Ag/S. (b) PL spectra of the AIS-PEI/2MPA QDs prepared with a constant molar ratio of Ag/S 1/10, cations/coating 1/5, and different molar ratios of Ag/In. (c) PL spectra of all AIS-PEI/2MPA QDs prepared at different conditions. (d) XRD (AIS JCPDS: 25-1328), (e) FTIR, (f) Ag 3d, (g) In 3d, and (h) S 2p XPS spectra of the AIS-PEI/2MPA-1 QDs.
