Optical thermometry based on up-conversion luminescence behavior of self-crystallized K3YF6:Er3+ glass ceramics
Optical thermometry based on up-conversion luminescence behavior of self-crystallized K3YF6:Er3+ glass ceramics
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基于自晶K3YF6:Er3微晶玻璃上转换发光行为的光学测温
DOI：
10.1016/j.snb.2015.10.087
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发表时间：
2016-03-01
影响因子：
8.4
通讯作者：
Guo, Hai
中科院分区：
文献类型：
--
作者：
Cao, JiangKun;Li, XiaoMan;Guo, Hai
采用传统的熔融淬冷工艺和热处理工艺，成功制备了掺镧系离子的自晶化氟化物K3YF 6微晶玻璃。与以往报道的一般情况不同，熔体淬冷后已经形成了纳米晶，这在一定程度上有利于实现玻璃的可控晶化，从而获得理想的纳米晶尺寸和活化剂分配。光谱分析表明，分区的活性中心到K3YF 6晶格与低声子能量。因此，在进一步热处理之后，掺杂镧系离子的GC的发光被高度增强。此外，通过热耦合发光态H-2（11/2）和S-4（3/2）的荧光强度比（FIR）研究了Er 3+掺杂GC的绿色上转换发光随温度的变化.在300 K时，灵敏度为1.27% K ~（-1），获得的高能差（Δ E）为793 cm ~（-1）。这种掺Er ~（3+）的K_3YF_6气相色谱在光学温度传感器中具有潜在的应用前景。（C）2015 Elsevier B. V.保留所有权利。
Self-crystallized fluoride K3YF6 glass ceramics ( GC) doped with lanthanide ions were successfully manufactured via traditional melt-quenching route with further heat-treatment. Different from common cases previously reported, nano-crystals have already formed after melt-quenching, which is beneficial to the realization of controllable glass crystallization to some degree for affording desirable nano-crystal size and activator partition. Optical spectroscopy analysis demonstrates the partition of the active centers into the K3YF6 crystalline lattice with low phonon energy. Hence, luminescence of GC doped with lanthanide ions is highly enhanced after further heat-treatment. Moreover, the temperature-dependent green upconversion emissions of Er3+ doped GC were investigated by the fluorescence intensity ratio (FIR) of the thermally coupled emitting states (H-2(11/2) and S-4(3/2)). The sensitivity is 1.27% K-1 at 300 K and the obtained high energy difference (Delta E) is 793 cm(-1). Such Er3+ doped K3YF6 GC may present potential application in optical temperature sensors. (C)2015 Elsevier B.V. All rights reserved.