Energy transfer from Ce3+ to Tb3+, Dy3+ and Eu3+ in Na3Y(BO3)2

来源 :稀土学报(英文版) | 被引量 : 0次 | 上传用户:goove8
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Energy transfer is a promising strategy to improve the visible light emitting efficiency of phosphors. A series of Ce3+, Tb3+, Dy3+ and/or Eu3+ doped Na3Y(BO3)2 (NYB) were prepared by solid-state reaction and their photoluminescence properties were stud-ied in detail. The excitation and emission spectra of NYB:Ce3+,Tb3+ and NYB:Ce3+,Dy3+revealed that an efficient energy transfer process from Ce3+ to Tb3+ or Dy3+ occurred upon excitation Ce3+ into 5d level. The dependence of the decay times of Ce3+ 5d level on Tb3+ or Dy3+ concentration indicated that the energy transfer efficiency increased with increasing Tb3+ or Dy3+ content. So the UV ex-citation light could be converted into green or near-white emission. However, there was no obvious evidence of the existence of en-ergy transfer from Ce3+ to Eu3+ in NYB.
其他文献
An abnormal fluorescence intensity ratio (FIR) between two green emissions of Er3+ at room temperature, which is larger than a normal value, emerged in many rep
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
The inherent advantages of ionic liquids(ILs) in electrochemistry have received extensive attention in recent two decades. As a new generation of ILs, non-haloa
期刊
伴随着我国经济发展,以及畜牧业养殖技术不断应用,在畜牧业得到发展同时,也为人们提供更多的禽畜产品,但是其中隐藏的一系列问题便随之出现,其中最为关键的便是饲料安全隐患
本文基于校园网的特定技术要求,提出了宽带校园网的整体解决方案,对宽带校园网的用户隔离与互通、认证、计费、网管和安全问题分别进行了讨论,并给出了该方案成功应用的一个
2014-2015年,邢台县在丘陵区的干旱贫瘠的石灰岩区域营造了万亩侧柏林,苗木成活率达95%以上,且长势良好.这种成功栽植模式,得益于采取了一系列节水保湿,防止水土流失的措施,
期刊
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
期刊
在现代化的信息技术迅猛发展进程中,无线网络逐步融入到了人们的日常生活和工作中,转变了其生活习性和工作模式,并且在无线网络的运用过程中网络布线设计工作也发生了变化,换
期刊