Morphology controlled synthesis and sensitive temperature sensing performance of Gd2(WO4)3: Er3+, Yb3+
Morphology controlled synthesis and sensitive temperature sensing performance of Gd2(WO4)3: Er3+, Yb3+
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DOI：
10.1016/j.materresbull.2023.112460
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发表时间：
2023
影响因子：
5.4
通讯作者：
Lili Han;Lijuan Wang;Yayun Ning;Wenqain Zhou;Yifan Miao;Siyuan Tian;Yuncan Fan;Ziqi He
中科院分区：
文献类型：
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作者：
Lili Han;Lijuan Wang;Yayun Ning;Wenqain Zhou;Yifan Miao;Siyuan Tian;Yuncan Fan;Ziqi He
稀土离子掺杂负热膨胀材料作为荧光热敏材料，因其在实现高分辨率荧光方面的天然优势而备受关注。本文制备了Er3+/Yb3+共掺Gd2(WO4)3微粒。通过控制添加剂、pH值和反应速度，可以很好地控制它们的形态和大小。在近红外(NIR)激发下，化合物表现出绿色和红色的UC发射。对于Er3+离子2H11/2/4s3/2的热耦合能级，其最大绝对灵敏度(Sa)和相对灵敏度(Sr)分别为1.39%K−1(300K)和1.18%K−1(293K)。最终，利用合成的微粒和940 nm的近红外芯片，促进了熟练的绿色发光二极管器件的开发。上述特性表明，Er3+/Yb3+共掺Gd2(WO4)3微粒在非接触式光学温度传感和固态照明领域具有潜在的应用前景。
Rare-earth ion doped negative thermal expansion materials as fluorescent thermosensitive materials have attracted significant attention due to their natural advantage in achieving high resolution fluorescence. Herein, Er3+/Yb3+-codoped Gd2(WO4)3microparticles were developed. Their morphology and size can be finely controlled by manipulating the additives, pH values, and reaction rates. Under near-infrared (NIR) excitation, the compounds evince green and red UC emissions. With regards to the thermal coupling level of2H11/2/4S3/2of Er3+ions, the maximum absolute sensitivity (Sa) and relative sensitivity (Sr) were established to be 1.39 % K−1(at 300 K) and 1.18 % K−1(at 293 K), respectively. Ultimately, the utilization of synthesized microparticles and a 940 nm NIR chip facilitated the development of a proficient green-emitting light-emitting diode device. The aforementioned characteristics indicate that Er3+/Yb3+co-doped Gd2(WO4)3microparticles possess potential applications in the fields of non-contact optical temperature sensing as well as solid-state lighting.