Fabrication and optical properties of ZnS:Mn^sup 2+^ quantum dots/SiO2 nanocomposites
ZnS:Mn^sup 2+^ quantum dots (QDs)/SiO2 nanocomposites were successfully synthesized by stöber method. The results showed that the Mn^sup 2+^ ions were substitutionally incorporated into the ZnS host and the average size of the ZnS:Mn^sup 2+^ (5 %) QDs was about 5.5 nm. The yellow-orange emission fro...
Gespeichert in:
Veröffentlicht in: | Journal of materials science. Materials in electronics 2014-10, Vol.25 (10), p.4512 |
---|---|
Hauptverfasser: | , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | ZnS:Mn^sup 2+^ quantum dots (QDs)/SiO2 nanocomposites were successfully synthesized by stöber method. The results showed that the Mn^sup 2+^ ions were substitutionally incorporated into the ZnS host and the average size of the ZnS:Mn^sup 2+^ (5 %) QDs was about 5.5 nm. The yellow-orange emission from the Mn^sup 2+^ ^sup 4^T^sub 1^-^sup 6^A^sub 1^ transition was observed in the photoluminescence spectra, the peak intensity increased as the Mn^sup 2+^ doped ratio increased, and showed a maximum when the concentration of the Mn^sup 2+^ ions kept at 3 %. As the hydrolysis time of tetraethyl orthosilicate increased, the intensity of the yellow-orange emission reached the highest value when t = 4 h for the ZnS:Mn^sup 2+^ (5 %) QDs/SiO2 nanocomposites.[PUBLICATION ABSTRACT] |
---|---|
ISSN: | 0957-4522 1573-482X |
DOI: | 10.1007/s10854-014-2197-3 |