Abstract Optical thermometers have aroused considerable attention in recent years, and the increasing demand of sensitivity for practical application encourages the investigation on developing innovative non-contact optical thermometric materials with higher sensitivity and accuracy. Perovskite quantum dots (QDs) with excellent temperature-dependence optical properties, provide a feasible approach to realizing the detection of temperature change, however, their poor high temperature thermal stability and the facile realization to obtain the production remain a daunting challenge. Herein, growing Tb3+-doped CsPbI3 QDs in situ in borosilicate glass is proposed, which ensures the phase stability, and high-efficiency florescence output of the all-inorganic perovskite as a temperature sensor. A higher absolute and relative temperature sensitivity (0.0398 K–1 and 7.12%/K, respectively), along with the visible color change from orange-red to yellow-green with the increase of temperature is accomplished. Notably, the repeatable florescence intensity of Tb3+-doped CsPbI3 QDs under high temperature enables their temperature sensing application.

中文翻译：

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用于视觉光学测温的透明钙钛矿微晶玻璃

摘要 近年来，光学温度计引起了人们的广泛关注，实际应用对灵敏度的需求不断增加，促使人们研究开发具有更高灵敏度和精度的创新型非接触式光学测温材料。钙钛矿量子点（QD）具有优异的温度依赖性光学特性，为实现温度变化的检测提供了一种可行的方法，但其高温热稳定性差和易于实现生产仍然是一个艰巨的挑战。在此，提出了在硼硅酸盐玻璃中原位生长 Tb3+ 掺杂的 CsPbI3 QD，以确保全无机钙钛矿作为温度传感器的相稳定性和高效率的荧光输出。更高的绝对和相对温度灵敏度 (0. 0398 K–1 和 7.12%/K），随着温度的升高，可见颜色从橙红色变为黄绿色。值得注意的是，Tb3+ 掺杂的 CsPbI3 QD 在高温下的可重复荧光强度使其能够应用于温度传感。