Journal article
Enhancing the photoluminescence of SnS quantum dots by ZnS treatment
Chemical physics letters, v 754, 137696
Sep 2020
Abstract
[Display omitted]
•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)
Near-infrared, nontoxic SnS quantum dot has been shown to be a good bioimaging probe. It was found that surface treatment by ZnS precursor solution improved the photoluminescence of the SnS by 19x without changing the emission wavelength. EDS and XPS showed that small amounts of ZnS was present on the surface of SnS particles, while TEM showed that the ZnS treatment caused the SnS particles to cluster leading to a redshift in the UV/Vis absorption spectra and the sharpening of XRD peaks. The suspension stability of the SnS/ZnS quantum dots was further improved with 3-Mercaptopropionic acid as a capping molecule.
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Details
- Title
- Enhancing the photoluminescence of SnS quantum dots by ZnS treatment
- Creators
- Huai-Yu Cheng - Drexel UniversityOzgun Acar - Drexel UniversityWan Y. Shih - Drexel UniversityWei-Heng Shih - Drexel University
- Publication Details
- Chemical physics letters, v 754, 137696
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems; Materials Science and Engineering
- Web of Science ID
- WOS:000560718800010
- Scopus ID
- 2-s2.0-85086457895
- Other Identifier
- 991019167438004721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Physical
- Physics, Atomic, Molecular & Chemical