Comparison of upconversion luminescent properties and temperature sensing behaviors of beta-NaYF4:Yb3+/Er3+ nano/microcrystals prepared by various synthetic methods
Comparison of upconversion luminescent properties and temperature sensing behaviors of beta-NaYF4:Yb3+/Er3+ nano/microcrystals prepared by various synthetic methods
复制标题
不同合成方法制备的β-NaYF4:Yb3/Er3纳米/微晶的上转换发光性能和温度传感行为比较
DOI：
10.1007/s10854-016-4832-7
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发表时间：
2016
影响因子：
2.8
通讯作者：
Ji Zhenguo
中科院分区：
文献类型：
--
作者：
Xi Junhua;Ding Mingye;Dai Jianbin;Pan Yajing;Chen Daqin;Ji Zhenguo
本文分别采用溶剂热法、热分解法、水热法和熔盐法成功合成了Yb 3 +/Er 3+共掺杂六方晶系NaYF 4。系统研究了β-NaYF 4：Yb 3 +/Er 3+纳/微晶体的晶体结构、颗粒形貌、尺寸及相应的上转换发光性能。有趣的是，β-NaYF 4：20%Yb 3+，2%Er 3+样品的温度依赖性UC发光性能与其合成方法密切相关。通过对β-NaYF 4：Yb 3 +/Er 3+样品的上转换发光和热敏性的比较，发现热分解法合成的β-NaYF 4：Yb 3 +/Er 3+亚微米片具有更强的绿色发光强度、更好的发光热稳定性和更高的温度灵敏度。这一发现对于β-NaYF_4：Yb ~（3+）/Er ~（3+）在光学温度传感器中的应用和进一步理解UC发光机理具有重要意义。
In this paper, Yb3+/Er3+co-doped hexagonal NaYF4have been successfully synthesized by solvothermal, thermal decomposition, hydrothermal and molten salt method, respectively. The crystal structures, particle morphologies, sizes and corresponding upconversion luminescent properties of β-NaYF4:Yb3+/Er3+nano/microcrystals are systemically studied. It is interesting to observed that the temperature-dependent UC luminescent properties of β-NaYF4:20 %Yb3+, 2 %Er3+samples are strongly related to their synthesis methods. Comparison of the upconversion luminescence and thermal sensitivity between the β-NaYF4:Yb3+/Er3+samples reveals that β-NaYF4:Yb3+/Er3+sub-microplates synthesized by thermal decomposition method have much stronger green emission intensity, better luminescent thermal stability and higher temperature sensitivity. This findings are relevant to the application of β-NaYF4:Yb3+/Er3+in optical temperature sensors and to the further understanding of the UC luminescent mechanism.