Near-infrared to short-wavelength upconversion temperature sensing in transparent bulk glass ceramics containing hexagonal NaGdF4:Yb3+/Ho3+ nanocrystals
Near-infrared to short-wavelength upconversion temperature sensing in transparent bulk glass ceramics containing hexagonal NaGdF4:Yb3+/Ho3+ nanocrystals
复制标题
含有六方 NaGdF4:Yb3 /Ho3 纳米晶体的透明块状玻璃陶瓷的近红外到短波长上转换温度传感
DOI：
10.1364/ome.7.003023
复制
发表时间：
2017-08-01
影响因子：
2.8
通讯作者：
Yin, Min
中科院分区：
文献类型：
--
作者：
Li, XinYue;Yuan, Shuo;Yin, Min
采用自晶化法成功制备了六方NaGdF 4：Yb 3+，Ho 3+纳米晶透明微晶玻璃，并通过XRD、TEM、HRTEM、STEM-HADDF和上转换（UC）发射光谱进行了表征。结果表明，GC 750具有很好的上转换发光特性，Ho 3+的F-5（1）/（5）G（6）和F-5（2，3）/K-3（8）能级被证明是热耦合能级，从而导致了基于荧光强度比（FIR）的高温度敏感行为。在390 K时，相对灵敏度为1.43% .k（-1），在光学测温中有很大的应用潜力。(C)2017美国光学学会
Transparent glass ceramics containing hexagonal NaGdF4:Yb3+, Ho3+ nanocrystals were successfully fabricated via self-crystallization, which was further confirmed by XRD, TEM, HRTEM, and STEM-HADDF, as well as upconversion (UC) emission spectra. Impressively, GC750 exhibited fascinating upconversion luminescence, and the corresponding F-5(1)/(5)G(6) and F-5(2,3)/K-3(8) states of Ho3+ were proven to be thermally coupled energy levels (TCELs), resulting in high temperature-sensitive behaviors based on fluorescence intensity ratio (FIR) for optical thermometry. As a consequence, a high relative sensitivity of 1.43% .k(-1) at 390 K was achieved, offering a great potentially application in optical thermometry. (C) 2017 Optical Society of America