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长春光学精密机械与物... [1]
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The effect of binary stars on photometric redshift for galaxies at z ~ 2.0
会议论文
Beijing, China, 2016-02-01
作者:
Zhang, Yu
;
Liu, Jinzhong
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浏览/下载:10/0
  |  
提交时间:2018/01/24
Galaxies: Stellar Content
Galaxies: High-redshift
Binaries: General
The effects of binary stars on the colors of galaxies at z~2.0
会议论文
IAU Symposium 295:The intriguing life of massive galaxies, Beijing, China, 27-31st August, 2012
作者:
Y. Zhang
;
J. Liu
;
F. Zhang
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浏览/下载:13/0
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提交时间:2016/07/28
binary: general
galaxies: high-redshift
galaxies: stellar content
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
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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.
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