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. 2021 Jan 4;21(1):658–665. doi: 10.1021/acs.nanolett.0c04239

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© 2021 The Authors. Published by American Chemical Society

This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License, which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.

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Top row, results from single-QD measurements on two different core-only CIS QDs; bottom row, results from similar experiments on one CIS/CdS core/shell QD. (a,b) PL intensity I_PL as a function of time. (c,d) Second-order correlation function g⁽²⁾(τ). (e,f) PL decay curve, constructed from time periods in which the QD was ON [(e) I_PL ≥ 200 cts/100 ms, (f) I_PL ≥ 65 cts/100 ms]. Lines are fits to single-exponential decay with a constant background. (g,h) ON-state PL spectrum, integrated over (g) 6.5 s and (h) 91.3 s. Lines are Gaussian fits. As indicated by the color, data in panel g were measured on a different core-only CIS QD than the data depicted in panels a, c, and e.