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首页> 外文期刊>RSC Advances >Transparent Na5Gd9F32:Er3+ glass-ceramics: enhanced up-conversion luminescence and applications in optical temperature sensors
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Transparent Na5Gd9F32:Er3+ glass-ceramics: enhanced up-conversion luminescence and applications in optical temperature sensors

机译：透明Na 5 Gd 9 F 32 ：Er 3 + 玻璃陶瓷：增强的上转换发光和应用在光学温度传感器中

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摘要

New rare earth ion-doped nanocomposite materials, Na5Gd9F32:Er3+ glass-ceramics, were fabricated via a traditional melt-quenching technique and subsequent heat treatments. Their microstructural and optical properties were systemically investigated by XRD, TEM, HRTEM techniques, absorption, up-conversion spectra and luminescence lifetime measurements. Excited by 980 nm laser, both glass and glass-ceramic samples presented characteristic red and green up-conversion emissions of Er3+ ions. After crystallization, Er3+ ions were incorporated into the precipitated Na5Gd9F32 nanocrystals. Compared with precursor glasses, the red up-conversion intensity of glass-ceramics was enhanced by 1300 times, and the luminescence lifetime was also prolonged. The fluorescence intensity ratio technique was utilized to carry out the optical thermometry based on the green up-conversion luminescence behavior of Er3+ ions. Results manifest that Na5Gd9F32:Er3+ glass-ceramics would have potential applications in optical temperature sensors with high sensitivity.
机译：新型稀土离子掺杂纳米复合材料，Na 5 Gd 9 F 32 < / sub> ：Er 3 + 玻璃陶瓷是通过传统的淬火技术和随后的热处理制成的。通过XRD，TEM，HRTEM技术，吸收，上转换光谱和发光寿命测量系统研究了它们的微结构和光学性质。在980 nm激光的激发下，玻璃样品和玻璃陶瓷样品均呈现出特征性的Er 3 + 离子红色和绿色上转换发射。结晶后，将Er 3 + 离子掺入沉淀的Na 5 Gd 9中 F 32 纳米晶体。与前体玻璃相比，微晶玻璃的红色上转换强度提高了1300倍，发光寿命也得到了延长。基于Er 3 + 离子的绿色向上转换发光行为，利用荧光强度比技术进行光学测温。结果表明，Na 5 Gd 9 F 32 ：Er 3 + 玻璃陶瓷将在具有高灵敏度的光学温度传感器中具有潜在的应用。

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