DOI: 10.1002/adfm.200305011. Efficient and Photostable ZnS‐Passivated CdS:Mn Luminescent Nanocrystals

Efficient and Photostable ZnS‐Passivated CdS:Mn Luminescent Nanocrystals

10.1002/adfm.200305011

Crossref journal-article

Wiley

Advanced Functional Materials (311)

Abstract

AbstractEfficient and photostable ZnS‐passivated CdS:Mn (CdS:Mn/ZnS core/shell) nanocrystals were synthesized using reverse micelle chemistry. CdS:Mn/ZnS core/shell nanocrystals exhibited much improved luminescent properties (quantum yield and photostability) over organically (n‐dodecanethiol‐) capped CdS:Mn nanocrystals. This is the result of effective, robust passivation of CdS surface states by the ZnS shell and consequent suppression of non‐radiative recombination transitions. The dependence of photoluminescence (PL) intensity has been observed as a function of UV irradiation time for both organically and inorganically capped CdS:Mn nanocrystals. Whereas organically capped CdS:Mn nanocrystals exhibit a significant reduction of PL intensity, CdS:Mn/ZnS core/shell nanocrystals exhibit an increased PL intensity with UV irradiation. XPS (X‐ray photoelectron spectroscopy) studies reveal that UV irradiation of CdS:Mn/ZnS nanocrystals in air atmosphere induces the photo‐oxidation of the ZnS shell surface, leading to the formation of ZnSO4. This photo‐oxidation product is presumably responsible for the enhanced PL emission, serving as a passivating layer.

Bibliography

Yang, H., & Holloway, P. H. (2004). Efficient and Photostable ZnSâPassivated CdS:Mn Luminescent Nanocrystals. Advanced Functional Materials, 14(2), 152â156. Portico.

Authors 2

H. Yang (first)
P. H. Holloway (additional)

References 22 Referenced 105

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Dates

Type	When
Created	21 years, 6 months ago (Feb. 18, 2004, noon)
Deposited	1 year, 9 months ago (Nov. 17, 2023, 10 a.m.)
Indexed	5 months, 2 weeks ago (March 19, 2025, 9:18 a.m.)
Issued	21 years, 7 months ago (Feb. 1, 2004)
Published	21 years, 7 months ago (Feb. 1, 2004)
Published Online	21 years, 6 months ago (Feb. 11, 2004)
Published Print	21 years, 7 months ago (Feb. 1, 2004)

Funders 0

None

BibTeX

@article{Yang_2004, title={Efficient and Photostable ZnS‐Passivated CdS:Mn Luminescent Nanocrystals}, volume={14}, ISSN={1616-3028}, url={http://dx.doi.org/10.1002/adfm.200305011}, DOI={10.1002/adfm.200305011}, number={2}, journal={Advanced Functional Materials}, publisher={Wiley}, author={Yang, H. and Holloway, P. H.}, year={2004}, month=feb, pages={152–156} }

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