In recent years, luminescence nanothermometers with near infrared light (NIR) emission excited in the NIR range have attracted much attention due to their potential in bio applications. Here, we propose a new nanothermometer based on triple doped 1%Ho, 1%Er, 1%Yb - Y 2 O 3 that operates in the second and third biological windows around 1200 and 1530 nm under pulsed excitation at 905 nm. The NIR emissions were analysed in the temperature range of 298–473 K in terms of intensity, shape and dynamics. The nanothermometer performances were described using the luminescent intensity ratio (LIR) corresponding to the 5 I 6 - 5 I 8 and 4 I 13/2 - 4 I 15/2 emissions transitions of Ho and Er, respectively. A maximum relative sensitivity of 1.5% K −1 was achieved at 309 K, which is among the highest five values reported so far for the NIR to NIR downconversion nanothermometers. The thermo...

中文翻译：

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基于三重掺杂Ln -Y2O3的敏感的近红外至近红外发光纳米温度计。

近年来，由于其在生物应用中的潜力，具有在NIR范围内激发的近红外光（NIR）发射的发光纳米温度计已经引起了广泛的关注。在这里，我们提出了一种基于三重掺杂1％Ho，1％Er，1％Yb-Y 2 O 3的新型纳米温度计，该温度计在905 nm的脉冲激发下在1200和1530 nm的第二和第三生物窗口中工作。在强度，形状和动力学方面，在298–473 K的温度范围内分析了近红外发射。使用分别对应于Ho和Er的5 I 6-5 I 8和4 I 13/2-4 I 15/2发射跃迁的发光强度比（LIR）描述了纳米温度计的性能。在309 K时达到1.5％K -1的最大相对灵敏度，这是迄今为止报道的近红外至近红外下转换纳米温度计的最高五个值之一。热...