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Fig. 4 | Nanoscale Research Letters

Fig. 4

From: Cd-free Cu-doped ZnInS/ZnS Core/Shell Nanocrystals: Controlled Synthesis And Photophysical Properties

Fig. 4

a UV-visible absorption and b photoluminescence spectra of ZnInS:Cu/ZnS core/shell CNCs as a function of the Zn/In stoichiometric composition. The QY attained for different samples with Zn/In ratio 0.11, 0.33, 0.53, and 1.0 is 56.0, 65.0, 55.0, and 48.0%, respectively. The inset in a shows the calculated energy band gap of ZnInS:Cu/ZnS CNCs. c Shift of the PL peak position and PL quantum yield with respect to change in Zn/In. d PL decay curves of ZnInS:Cu/ZnS CNCs for different Zn/In ratios

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