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长春光学精密机械与物... [3]
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会议论文 [3]
发表日期
2010 [3]
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发表日期:2010
内容类型:会议论文
专题:长春光学精密机械与物理研究所
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Fabrication and photoluminescence of ZnS: Mn2+ nanowires/ZnO quantum dots/SiO2 heterostructure (EI CONFERENCE)
会议论文
Yang J.
;
Cao J.
;
Yang L.
;
Zhang Y.
;
Wang Y.
;
Liu X.
;
Wang D.
;
Wei M.
;
Gao M.
;
Lang J.
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浏览/下载:20/0
  |  
提交时间:2013/03/25
In this paper
we demonstrated the encapsulation of ZnS: Mn2+ nanowires (NWs) and ZnO quantum dots (QDs) with a layer of mesoporous SiO 2 shell for the purpose of integrating dual emission property into one common nanostructure. The average diameter of ZnS: Mn2+ NWs
ZnO QDs
and ZnS: Mn2+ / ZnO@SiO2 heterostructure was about 10 nm
6 nm
and 22 nm
respectively. Within ZnS: Mn2+ / ZnO@SiO 2 nanocomposites
the intensity of the yellow-orange emission contributed by ZnS: Mn2+ NWs and the UV emission contributed by ZnO QDs was three and ten times higher than their individual components
respectively. The fluorescence intensity ratio of the dual emission can be tuned by adjusting the hydrolysis time of tetraethyl orthosilicate. The peak energy of the yellow-orange and UV emission showed blueshift and redshift as increasing the temperature
respectively. The anomalous enhancement of the integrated intensity for the UV emission with the temperature indicated that the high surface state density existing in ZnO QDs can overrun the influence of temperature quenching and even alter the photoluminescent properties. 2010 American Institute of Physics.
Synthesis, morphology and optical properties of SrTiO3:Pr 3+ phosphors (EI CONFERENCE)
会议论文
3rd International Symposium on Functional Materials 2009, ISFM 2009, June 15, 2009 - June 18, 2009, Jinju, Korea, Republic of
Fu Z.
;
Li W.
;
Kyoung Yang H.
;
Kee Moon B.
;
Chun Choi B.
;
Hyun Jeong J.
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浏览/下载:13/0
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提交时间:2013/03/25
SrTiO3:Pr3+ phosphors with different morphologies were prepared by using high-temperature solid-state reaction
the solvothermal method and sol-gel synthesis. All the products were systematically characterized by powder x-ray diffraction (XRD)
infrared spectroscopy (IR)
scanning electron microscopy (SEM)
photoluminescence (PL) and photoluminescent excitation spectra (PLE). The influence of different synthesis methods on the morphology and optical properties of SrTiO3:Pr3+ was discussed. 2010 The Royal Swedish Academy of Sciences.
Structural and photoluminescence properties of aligned Sb-doped ZnO nanocolumns synthesized by the hydrothermal method (EI CONFERENCE)
会议论文
Fang X.
;
Li J.
;
Zhao D.
;
Li B.
;
Zhang Z.
;
Shen D.
;
Wang X.
;
Wei Z.
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浏览/下载:18/0
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提交时间:2013/03/25
Aligned Sb-doped ZnO nanocolumns were synthesized by a simple hydrothermal method. Based on the analyses of the X-ray diffraction and photoluminescence result
it could be confirmed that the Sb has successfully doped in the ZnO crystal lattices to form an accepter energy level. At 85 K
the recombination of the acceptor-bound exciton was predominant in PL spectrum
which was attributed to the transition of the (SbZn-2VZn) complex bound exciton. The acceptor binding energy had been calculated to be 123 meV. 2009 Published by Elsevier B.V. All rights reserved.
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