Upconversion of transparent glass ceramics containing β-NaYF(4):Yb(3+), Er(3+) nanocrystals for optical thermometry.
Upconversion of transparent glass ceramics containing β-NaYF(4):Yb(3+), Er(3+) nanocrystals for optical thermometry.
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用于光学测温的含有 β-NaYF4:Yb3、Er3 纳米晶体的透明玻璃陶瓷的上转换
作者：
采用熔融淬火法并随后进行热处理制备了β-NaYF4纳米晶嵌入玻璃陶瓷。进行结构表征和光谱技术来验证 β-NaYF4 纳米晶体的成功沉淀和掺杂剂的分配。在 980 nm 激发下，Yb3+、Er3+ 共掺杂 β-NaYF4 纳米晶嵌入玻璃陶瓷可实现亮绿色上转换发射。此外，还在300-773 K范围内检查了基于热耦合能级的温度依赖性上转换行为，在300 K时最大相对灵敏度为1.24% K−1。因此，它已被证明是光学测温应用的有前途的候选者。 β-NaYF4:Yb3+、Er3+纳米晶体嵌入玻璃陶瓷已被制造出来，并表现出优异的光学测温性能。
β-NaYF4 nanocrystal embedded glass ceramics were fabricated by a melt-quenching method with subsequent heat-treatment. Structural characterizations and spectrographic techniques were performed to verify the successful precipitation of β-NaYF4 nanocrystals and partition of dopants. Upon excitation of 980 nm, bright green upconversion emission could be achieved in Yb3+, Er3+ codoped β-NaYF4 nanocrystal embedded glass ceramics. Furthermore, the temperature-dependent upconversion behaviour based on thermally coupled energy levels was also examined in the range of 300–773 K with the maximum relative sensitivity of 1.24% K−1 at 300 K. Accordingly, it has been proved to be a promising candidate for application in optical thermometry. β-NaYF4:Yb3+, Er3+ nanocrystals embedded glass ceramics have been fabricated and demonstrates excellent performance for optical thermometry.
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