Abstract Lanthanides doped optical materials with temperature sensing property are of great interest for optical thermometry. However, most lanthanides doped luminescent materials for ratiometric thermometer are often accompanied by thermal quenching, which leads to a decrease in temperature sensing performance. Here, Nd3+ doped Yb2Mo3O12 phosphor with near-infrared upconversion emissions has been fabricated. A non-contact thermometer is constructed with the luminescence of Nd3+ ions and the change of the emission peak height ratio of 4F7/2-4I9/2 and 4F5/2-4I9/2 transitions. Interestingly, the intensity of the emission peaks in the prepared phosphor increases with increasing temperature. Avoiding thermal quenching, the thermally enhanced upconversion emission affords high sensing accuracy. The maximum relative and absolute sensitivity was 1.186% and 9.789 × 10−3 K−1, respectively. The results suggest that appropriate emission bands with thermal population are benefit for optical ratiometric thermometers.

中文翻译：

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基于具有热增强发射的 Nd3+ 掺杂钼酸镱的近红外激发和发射温度计

摘要 具有感温特性的镧系元素掺杂光学材料在光学测温领域具有重要意义。然而，大多数用于比例式温度计的镧系元素掺杂发光材料往往伴随着热猝灭，导致温度传感性能下降。在这里，已制造出具有近红外上转换发射的 Nd3+ 掺杂 Yb2Mo3O12 磷光体。利用Nd3+离子的发光和4F7/2-4I9/2和4F5/2-4I9/2跃迁发射峰高比的变化构建了非接触式温度计。有趣的是，制备的磷光体中发射峰的强度随着温度的升高而增加。避免热猝灭，热增强的上转换发射提供高感测精度。最大相对和绝对灵敏度为 1。分别为 186% 和 9.789 × 10−3 K−1。结果表明，具有热密度的适当发射带有利于光学比例温度计。