DOI: 10.1063/1.1566932. Enhancement of photoluminescence in manganese-doped ZnS nanoparticles due to a silica shell

Enhancement of photoluminescence in manganese-doped ZnS nanoparticles due to a silica shell

10.1063/1.1566932

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

Zinc sulphide nanoparticles doped with manganese (ZnS:Mn) have been stabilized using thioglycerol [HSCH2CH(OH)CH2OH] molecules. The nanoparticles (∼1.7 nm) are highly stable and exhibit photoluminescence at ∼600 nm when excited with ultraviolet light. For increasing luminescence and stability the particles are further treated with tetraethylorthosilicate (TEOS)[Si(C2H5O)4] in an aqueous medium, yielding either a disordered silica matrix or spherical core-shell particles of up to ∼900 nm size with strongly enhanced luminescence under certain conditions. Photoluminescence, excitation spectroscopy, transmission electron microscopy, energy dispersive analysis of x-rays, x-ray diffraction, Raman spectroscopy, and x-ray photoelectron spectroscopy measurements have been performed for the characterization of the ZnS:Mn nanoparticles alone, in the silica matrix as well as in spherical silica shells. Among other things, the analysis indicates that the thioglycerol capping has been affected by the coating neither in the silica matrix nor in core-shell particles.

Bibliography

Ethiraj, A. S., Hebalkar, N., Kulkarni, S. K., Pasricha, R., Urban, J., Dem, C., Schmitt, M., Kiefer, W., Weinhardt, L., Joshi, S., Fink, R., Heske, C., Kumpf, C., & Umbach, E. (2003). Enhancement of photoluminescence in manganese-doped ZnS nanoparticles due to a silica shell. The Journal of Chemical Physics, 118(19), 8945â8953.

Authors 14

Anita S. Ethiraj (first)
Neha Hebalkar (additional)
S. K. Kulkarni (additional)
Renu Pasricha (additional)
J. Urban (additional)
C. Dem (additional)
M. Schmitt (additional)
W. Kiefer (additional)
L. Weinhardt (additional)
S. Joshi (additional)
R. Fink (additional)
C. Heske (additional)
C. Kumpf (additional)
E. Umbach (additional)

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Dates

Type	When
Created	22 years, 3 months ago (May 8, 2003, 6:38 p.m.)
Deposited	1 year, 6 months ago (Feb. 7, 2024, 1:24 p.m.)
Indexed	1 year ago (Aug. 7, 2024, 12:36 p.m.)
Issued	22 years, 3 months ago (May 15, 2003)
Published	22 years, 3 months ago (May 15, 2003)
Published Print	22 years, 3 months ago (May 15, 2003)

Funders 0

None

BibTeX

@article{Ethiraj_2003, title={Enhancement of photoluminescence in manganese-doped ZnS nanoparticles due to a silica shell}, volume={118}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1566932}, DOI={10.1063/1.1566932}, number={19}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Ethiraj, Anita S. and Hebalkar, Neha and Kulkarni, S. K. and Pasricha, Renu and Urban, J. and Dem, C. and Schmitt, M. and Kiefer, W. and Weinhardt, L. and Joshi, S. and Fink, R. and Heske, C. and Kumpf, C. and Umbach, E.}, year={2003}, month=may, pages={8945–8953} }

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  "abstract": "<jats:p>Zinc sulphide nanoparticles doped with manganese (ZnS:Mn) have been stabilized using thioglycerol [HSCH2CH(OH)CH2OH] molecules. The nanoparticles (\u223c1.7 nm) are highly stable and exhibit photoluminescence at \u223c600 nm when excited with ultraviolet light. For increasing luminescence and stability the particles are further treated with tetraethylorthosilicate (TEOS)[Si(C2H5O)4] in an aqueous medium, yielding either a disordered silica matrix or spherical core-shell particles of up to \u223c900 nm size with strongly enhanced luminescence under certain conditions. Photoluminescence, excitation spectroscopy, transmission electron microscopy, energy dispersive analysis of x-rays, x-ray diffraction, Raman spectroscopy, and x-ray photoelectron spectroscopy measurements have been performed for the characterization of the ZnS:Mn nanoparticles alone, in the silica matrix as well as in spherical silica shells. Among other things, the analysis indicates that the thioglycerol capping has been affected by the coating neither in the silica matrix nor in core-shell particles.</jats:p>",
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