Enhancing the photoluminescence of SnS quantum dots by ZnS treatment

Chemical Physics Letters(2020)

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Abstract
•Tin sulfide (SnS) quantum dots were surface treated with Zinc Sulfide (ZnS) precursors.•Surface treatment increased SnS QD photoluminescence by 20x without affecting emission wavelength.•Improved stability of SnS/ZnS QD suspensions in glycerol in a wide pH range with mercaptopropionic acid (MPA)•Improved stability of SnS/ZnS QD in aqueous suspensions using mercaptopropylsilane (MPS)
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Key words
Quantum dots,Tin sulfide,Zinc sulfide,Coating,Near-infrared,Nontoxic
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