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...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of materials science. Materials in electronics 2014-10, Vol.25 (10), p.4512
Hauptverfasser: Cao, Jian, Wang, Tingting, Yang, Jinghai, Zhou, Xiaofu, Han, Donglai, Yang, Shuo, Liu, Qianyu, Niu, Haifeng
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
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