Lee, Jun-Woo
(Department of Electrical Engineering, Korea University)
,
Cho, Kyoung-Ah
(Department of Electrical Engineering, Korea University)
,
Kim, Hyun-Suk
(Department of Electrical Engineering, Korea University)
,
Kim, Jin-Hyoung
(Department of Electrical Engineering, Korea University)
,
Park, Byung-Jun
(Department of Electrical Engineering, Korea University)
,
Kim, Sang-Sig
(Department of Electrical Engineering, Korea University)
ZnS nanoparticles were synthesized and doped with $Pr^{3+}\;and\;Mn^{2+}$. Photoluminescence(PL) peaks were observed at 430 nm for pure ZnS, 585 nm for $Mn^{2+}-doped$ ZnS, and at around 430, 460, 480, 495 nm for ZnS nanoparticles doped with $Pr^{3+}$, respectively. ...
ZnS nanoparticles were synthesized and doped with $Pr^{3+}\;and\;Mn^{2+}$. Photoluminescence(PL) peaks were observed at 430 nm for pure ZnS, 585 nm for $Mn^{2+}-doped$ ZnS, and at around 430, 460, 480, 495 nm for ZnS nanoparticles doped with $Pr^{3+}$, respectively. For co-doped sample, both characteristics of doping with each element were exhibited. Optical annealing through UV irradiation was carried out in the two atmospheres; air and vacuum. The increases of the luminescence intensity was more considerable in the air, which is attributed to the photo-induced oxidation. In the case of co-doped sample the change of the emission color was observed by UV annealing.
ZnS nanoparticles were synthesized and doped with $Pr^{3+}\;and\;Mn^{2+}$. Photoluminescence(PL) peaks were observed at 430 nm for pure ZnS, 585 nm for $Mn^{2+}-doped$ ZnS, and at around 430, 460, 480, 495 nm for ZnS nanoparticles doped with $Pr^{3+}$, respectively. For co-doped sample, both characteristics of doping with each element were exhibited. Optical annealing through UV irradiation was carried out in the two atmospheres; air and vacuum. The increases of the luminescence intensity was more considerable in the air, which is attributed to the photo-induced oxidation. In the case of co-doped sample the change of the emission color was observed by UV annealing.
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제안 방법
In the ZnS nanoparticles there is another interesting phenomenon for the purpose of high luminescence efficiency, that is, a significant increase in the luminescence intensity during exposure to ultraviolet(UV) irradiation[3]. In this paper ZnS nanoparticles were synthesized by wet chemical method and doped with Pr3+ and Mn2+; doping with each element and co-doping with both elements. For all samples photoluminescence(PL) were measured and UV irradiation were carried out.
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