Abstract Compared with rare earth ions, transition metals have high temperature sensitivity, but the research on thermometry according to only using transition metals were not mentioned in phosphors. In this regard, a series of Mn2+:BaAl12O19–Mn4+:SrAl12O19 solid solutions were synthesized by high temperature solid phase method and researched. Although the sample is mixed phase, it can be synthesized in one step to avoid the defects in mixed phase preparation. The co-doping of Mn2+/Mn4+ is achieved by the self-reducing ability of BaAl12O19. It provides the possibility of thermometry doped Mn2+/Mn4+ based on the fluorescence intensity ratio. This material has excellent optical temperature sensing properties from 293 K to 406 K with good recyclability. Therefore, it is suitable for thermometry based on fluorescence intensity ratio with high maximum absolute (0.11 K−1 at 406 K) and relative sensitivity (4.37% K−1 at 293 K), obviously superior to the previously reported which are rare earth ions doped thermometry materials. Based on fluorescence lifetime of Mn4+, the maximum relative sensitivity is 4.48% K−1 at 353 K. The Mn2+/Mn4+ co-doped material is reported for the first time. The Mn2+:BaAl12O19–Mn4+:SrAl12O19 solid solutions have broad application prospect in the field of fluorescence thermometry, and the dual-mode thermometry makes it has excellent applicability in all aspects.

中文翻译：

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基于一步合成 Mn2+:BaAl12O19–Mn4+:SrAl12O19 固溶体荧光粉的高灵敏度双模光学测温

摘要 与稀土离子相比，过渡金属具有较高的温度敏感性，但在荧光粉中并未提及仅使用过渡金属进行测温研究。对此，采用高温固相法合成并研究了一系列Mn2+:BaAl12O19-Mn4+:SrAl12O19固溶体。虽然样品是混合相，但可以一步合成，避免了混合相制备的缺陷。Mn2+/Mn4+的共掺杂是通过BaAl12O19的自还原能力实现的。它提供了基于荧光强度比的温度测量掺杂 Mn2+/Mn4+ 的可能性。这种材料在 293 K 至 406 K 范围内具有出色的光学温度传感特性，并具有良好的可回收性。所以，适用于基于荧光强度比的测温，具有较高的最大绝对值（0.11 K-1 at 406 K）和相对灵敏度（4.37% K-1 at 293 K），明显优于之前报道的稀土离子掺杂测温材料。根据 Mn4+ 的荧光寿命，在 353 K 时的最大相对灵敏度为 4.48% K-1。首次报道了 Mn2+/Mn4+ 共掺杂材料。Mn2+:BaAl12O19-Mn4+:SrAl12O19 固溶体在荧光测温领域具有广阔的应用前景，双模测温使其在各方面都具有极好的适用性。在 353 K 时，最大相对灵敏度为 4.48% K-1。首次报道了 Mn2+/Mn4+ 共掺杂材料。Mn2+:BaAl12O19–Mn4+:SrAl12O19 固溶体在荧光测温领域具有广阔的应用前景，双模测温使其在各方面都具有极好的适用性。在 353 K 时，最大相对灵敏度为 4.48% K-1。首次报道了 Mn2+/Mn4+ 共掺杂材料。Mn2+:BaAl12O19–Mn4+:SrAl12O19 固溶体在荧光测温领域具有广阔的应用前景，双模测温使其在各方面都具有极好的适用性。