Multiple ratiometric nanothermometry using semiconductor BiFeO3 nanowires and quantitative validation of thermal sensitivity

IF 4.7 Q2 NANOSCIENCE & NANOTECHNOLOGY Micro and Nano Systems Letters Pub Date : 2022-01-10 DOI:10.1186/s40486-022-00143-w

K. Prashanthi, K. Krishna Mohan, Željka Antić, Kaveh Ahadi, Miroslav D. Dramicanin

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引用次数: 1

Abstract

Here, we report a very sensitive, non-contact, ratio-metric, and robust luminescence-based temperature sensing using a combination of conventional photoluminescence (PL) and negative thermal quenching (NTQ) mechanisms of semiconductor BiFeO₃ (BFO) nanowires. Using this approach, we have demonstrated the absolute thermal sensitivity of ~ 10 mK⁻¹ over the 300–438 K temperature range and the relative sensitivity of 0.75% K⁻¹ at 300 K. Further, we have validated thermal sensitivity of BFO nanowires quantitatively using linear regression and analytical hierarchy process (AHP) and found close match with the experimental results. These results indicated that BFO nanowires are excellent candidates for developing high‐performance luminescence-based temperature sensors.

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采用半导体BiFeO3纳米线的多重比率纳米热测量及热敏度的定量验证

在这里，我们报告了一种非常敏感的、非接触的、比例的、鲁棒的基于发光的温度传感技术，该技术使用了半导体BiFeO3 (BFO)纳米线的传统光致发光(PL)和负热猝灭(NTQ)机制的组合。利用这种方法，我们已经证明了在300 - 438 K温度范围内的绝对热敏度为~ 10 mK−1，在300 K温度范围内的相对灵敏度为0.75% K−1。利用线性回归和层次分析法(AHP)对BFO纳米线的热敏度进行了定量验证，结果与实验结果吻合较好。这些结果表明，BFO纳米线是开发高性能发光温度传感器的理想候选者。图形抽象

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