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Erschienen in: Journal of Materials Science: Materials in Electronics 13/2019

04.06.2019

Structural, optical, photoluminescence and electrochemical behaviours of Mg, Mn dual-doped ZnS quantum dots

verfasst von: P. Sakthivel, G. K. D. Prasanna Venkatesan, Kamalraj Subramaniam, P. Muthukrishnan

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 13/2019

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Abstract

Mg, Mn dual doped ZnS quantum dots (QDs) have been synthesized via co-precipitation method. XRD results revealed that the dual doped ZnS QDs have a cubic structure without forming secondary phase. The particle size was ranged in ~ 2 nm. TEM study portrayed particle assembly and its agglomeration. The scanning electron microscope (SEM) study showed the surface smoothening on samples for Mg addition. Fourier transform infra-red (FTIR) and energy dispersive x-ray (EDX) analysis evidenced the substitution of Mg into Mn:ZnS QDs. UV–visible studies showed that absorption peak intensity was increased and redshifted, shortening of band-gap with increasing Mg doping concentration. A weak UV emission and strong red emission were received from the photoluminescence (PL) investigations. The electrochemical analysis showed a better electrical property for Mg = 2% concentration. Since Mg = 2% doping ratio offers better optical absorption, PL emission, catalytic properties, these materials shall be selected as a suitable candidate for solar and optoelectronic device applications.

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Metadaten
Titel
Structural, optical, photoluminescence and electrochemical behaviours of Mg, Mn dual-doped ZnS quantum dots
verfasst von
P. Sakthivel
G. K. D. Prasanna Venkatesan
Kamalraj Subramaniam
P. Muthukrishnan
Publikationsdatum
04.06.2019
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 13/2019
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-019-01551-2

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