Fabrication and optical properties of ZnS:Mn^sup 2+^ quantum dots/SiO2 nanocomposites

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...

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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
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container_title Journal of materials science. Materials in electronics
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creator Cao, Jian
Wang, Tingting
Yang, Jinghai
Zhou, Xiaofu
Han, Donglai
Yang, Shuo
Liu, Qianyu
Niu, Haifeng
description 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]
doi_str_mv 10.1007/s10854-014-2197-3
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