×
验证码:
换一张
忘记密码?
记住我
CORC
首页
科研机构
检索
知识图谱
申请加入
托管服务
登录
注册
在结果中检索
科研机构
长春光学精密机械与物... [3]
内容类型
会议论文 [3]
发表日期
2012 [3]
×
知识图谱
CORC
开始提交
已提交作品
待认领作品
已认领作品
未提交全文
收藏管理
QQ客服
官方微博
反馈留言
浏览/检索结果:
共3条,第1-3条
帮助
限定条件
发表日期:2012
内容类型:会议论文
专题:长春光学精密机械与物理研究所
第一署名单位
第一作者单位
通讯作者单位
已选(
0
)
清除
条数/页:
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
排序方式:
请选择
作者升序
作者降序
题名升序
题名降序
发表日期升序
发表日期降序
提交时间升序
提交时间降序
Influence of high temperature annealing in nitrogen on upconversion luminescence of -NaYF4: Yb3+, Er3+ hexagonal sub-microplates (EI CONFERENCE)
会议论文
2012 International conference on Function Materials and Nanotechnology, FMN 2012, May 19, 2012 - May 20, 2012, Zhengzhou, China
Zhao J.
;
Jia T.
;
Kong X.
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2013/03/25
The pure -NaYF4: Yb3+
Er3+ hexagonal sub-microplates were successfully prepared by the combination of coprecipitation and hydrothermal methods using sodium citrate as chelator. The size of them is about 600 nm 400 nm (side length thickness). The obtained sample was divided into two parts and one of them was annealed in nitrogen at 300 C for 2 hours. The crystal structure of the -NaYF4: Yb3+
Er3+ hexagonal sub-microplates before and after annealing treatment is hexagonal phase. Under the excitation of 980 nm diode laser
the upconversion luminescence intensity the sample after annealing is much stronger than that of the sample without annealing treatment. High temperature annealing process improved the crystallization of the sample
resulting in the decrease of the nonradiative relaxation and the enhancement of the upconversion luminescence. (2012) Trans Tech Publications
Switzerland.
Influence of Sensitizer Concentration on the Upconversion Luminescence of NaYF4: Yb3+, Er3+ Nanoparticles
会议论文
2012
Zhao J. W.
;
Shi D. M.
;
Zhao Y. G.
;
Kong X. G.
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2013/03/28
Influence of sensitizer concentration on the upconversion luminescence of NaYF4: Yb3+, Er3+ nanoparticles (EI CONFERENCE)
会议论文
2012 2nd International Conference on Machinery, Materials Science and Engineering Applications, MMSE 2012, June 16, 2012 - June 17, 2012, Wuhan, China
Zhao J.
;
Shi D.
;
Zhao Y.
;
Kong X.
收藏
  |  
浏览/下载:14/0
  |  
提交时间:2013/03/25
A series of NaYF4: Yb3+
Er3+ nanoparticles with different doping concentration were successfully prepared by the combination of coprecipitation and hydrothermal methods using sodium citrate as chelator. Upconversion luminescence can be observed in all of the samples at room temperature. Fixed the Er3+ concentration with 1 mol% unchanged
the effect of the Yb3+ concentration on the upconversion luminescence of NaYF4: Yb3+
Er3+ samples were studied when the doped Yb3+ concentrations were 0 mol%
1 mol%
2 mol%
5 mol%
10 mol% and 20 mol%
respectively. As increasing the Yb 3+ concentration
the total intensity of the upconversion luminescence of the samples is increasing while the ratio of red to green emission increases firstly and then decreases. The maximum ratio value is 22.1 when the Yb3+ concentration is 10 mol%. It is found that the cross relaxation and cooperative sensitization effect are the reasons for the phenomenon above. (2012) Trans Tech Publications.
©版权所有 ©2017 CSpace - Powered by
CSpace