机构

• 长春光学精密机械与物... [1]
• 中国科学院大学 [1]
• 上海光学精密机械研究... [1]

采集方式

• OAI收割 [2]
• iSwitch采集 [1]

内容类型

• 期刊论文 [2]
• 会议论文 [1]

发表日期

• 2012 [1]
• 2007 [1]
• 2006 [1]

学科主题

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Influence of sensitizer concentration on the upconversion luminescence of NaYF4: Yb3+, Er3+ nanoparticles (EI CONFERENCE) 会议论文  OAI收割 2012 2nd International Conference on Machinery, Materials Science and Engineering Applications, MMSE 2012, June 16, 2012 - June 17, 2012, Wuhan, China 作者:  Zhao J.;  Zhao Y.;  Zhao Y.;  Zhao Y. 收藏  |  浏览/下载：32/0  |  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.   Strong visible up-conversion emission in Tb3+, Tm3+ and Tb3+-Tm3+ co-doped tellurite glasses sensitized by Yb3+ 期刊论文  OAI收割 spectroc. acta pt. a, 2007, 卷号: 67, 页码: 1025, 1029 Wang Xunsi; 刘立人; Nie Qiuhua; Xu Tiefeng; Shen Xiang; 戴世勋; Zhang Xianghua 收藏  |  浏览/下载：1343/238  |  提交时间：2009/09/18 up-conversion  tellurite glasses  cooperative sensitization  Tb3+  Tm3+  Yb3+   Cooperative sensitization by reduction and chemical sensitization in agx core-shell emulsions 期刊论文  iSwitch采集 Imaging science journal, 2006, 卷号: 54, 期号: 1, 页码: 53-57 作者:  Zhi, X;  Shi, Y;  Cao, J;  Xia, P 收藏  |  浏览/下载：12/0  |  提交时间：2019/05/10 Agx core-shell emulsion  Dopant of silver dimmer  Cooperative sensitization