Aly Taleb Zein El Abidine, Saidi Kamel, Dammak Mohamed, Przybylska Dominika, Grzyb Tomasz
Laboratoire de Physique Appliquée, Groupe des Matériaux Luminescents, Faculté des Sciences de Sfax, Département de Physique, Université de Sfax, BP, 1171 Sfax, Tunisia.
Department of Rare Earths, Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland.
Dalton Trans. 2023 Apr 11;52(15):4954-4963. doi: 10.1039/d3dt00376k.
A lot of people are interested in optical thermometry, especially the new single-band ratiometric (SBR) technology for measuring temperature. But since SBR thermometry is still in its infancy, it is highly constrained when compared to the conventional dual-band ratiometric approach. In this paper, we propose a new SBR thermometry technique that is based on both the ground and excited state absorption processes. When these two different processes occur, the green emission of Tb in the low-cost host of NaSrGd(MoO) (NSGM) responds to changes in temperature in a way that is the exact opposite of what you would expect. The maximum luminescence intensity was obtained for an optimum terbium concentration of 40% mol. The resulting chromaticity coordinates (, ) and high correlated color temperature (CCT) values of the doped phosphors give a thermally stable cold emission in the green region with a color purity of about 92%. Using this intriguing characteristic as a foundation, sensitive SBR thermometry has been successfully developed, and the optical properties of the material have also been thoroughly researched. At room temperature, the relative sensitivity reaches its maximum value of 10.9% K. These findings may give important information that may be used in the design of new luminescent thermometers that have excellent performance.
许多人对光学测温技术感兴趣，尤其是用于测量温度的新型单波段比率（SBR）技术。但由于SBR测温技术仍处于起步阶段，与传统的双波段比率方法相比，其受到很大限制。在本文中，我们提出了一种基于基态和激发态吸收过程的新型SBR测温技术。当这两种不同过程发生时，低成本基质NaSrGd(MoO)（NSGM）中Tb的绿色发射对温度变化的响应方式与预期完全相反。在铽浓度为40%摩尔时获得了最大发光强度。掺杂磷光体的色度坐标（，）和高相关色温（CCT）值在绿色区域给出了热稳定的冷发射，色纯度约为92%。基于这一有趣特性，成功开发了灵敏的SBR测温技术，并对材料的光学性质进行了深入研究。在室温下，相对灵敏度达到最大值10.9%K。这些发现可能为设计具有优异性能的新型发光温度计提供重要信息。
