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(c) PbS/ZnS core/shell absorbance before (green) and after (blue) annealing showing that annealing results in an ~10 meV blueshift of the 1S h-1S e. absorbance peak. The PbS/ZnS core/shell nanocrystals had 6.5 ± 0.5 nm cores and 0.47 ± 0.06 nm ZnS shells and were made using two ZnS shell reactions. ................
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