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使用三价镧系元素共掺杂钙钛矿的发光纳米测温法。

Luminescence nanothermometry using a trivalent lanthanide co-doped perovskite.

作者信息

Singh Prashansha, Jain Neha, Shukla Shraddha, Tiwari Anish Kumar, Kumar Kaushal, Singh Jai, Pandey Avinash C

机构信息

Nanotechnology Application Centre, University of Allahabad Prayagraj 211002 UP India

Department of Physics, Dr Harisingh Gour Central University Sagar 470003 MP India.

出版信息

RSC Adv. 2023 Jan 18;13(5):2939-2948. doi: 10.1039/d2ra05935e.

DOI:10.1039/d2ra05935e
PMID:36756403
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9847348/
Abstract

This study investigates in detail the laser-mediated upconversion emission and temperature-sensing capability of (Ca YbEr )TiO. Samples were prepared at different concentrations to observe the effect of erbium on upconversion while increasing its concentration and keeping all the other parameters constant. Doping is a widespread technological process which involves incorporating an element called a dopant in a lower ratio to the host lattice to derive hybrid materials with desired properties. The (Ca YbEr )TiO perovskite nanoparticles were synthesized a sol-gel technique. The frequency upconversion was performed using a 980 nm laser diode excitation source. X-ray diffractometry (XRD) confirmed that the synthesized samples are crystalline in nature and have an orthorhombic structure. The temperature-sensing ability was examined using the fluorescence intensity ratio (FIR) algorithm of two emission bands (H → I and S → I) of the Er ion. Temperature-dependent upconversion luminescence is observed over a broad temperature range of 298-623 K. The maximum sensor sensitivity obtained is 6.71 × 10 K at 110°.

摘要

本研究详细探究了(CaYbEr)TiO的激光介导上转换发射和温度传感能力。制备了不同浓度的样品，以观察铒浓度增加而其他所有参数保持不变时铒对上转换的影响。掺杂是一种广泛应用的技术工艺，它涉及以较低比例将一种称为掺杂剂的元素掺入主体晶格中，以获得具有所需特性的混合材料。采用溶胶-凝胶技术合成了(CaYbEr)TiO钙钛矿纳米颗粒。使用980nm激光二极管激发源进行频率上转换。X射线衍射(XRD)证实，合成的样品本质上是晶体，具有正交结构。使用铒离子的两个发射带(H→I和S→I)的荧光强度比(FIR)算法检测温度传感能力。在298-623K的宽温度范围内观察到温度依赖的上转换发光。在110°时获得的最大传感器灵敏度为6.71×10K。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f06a/9847348/37b7485d264e/d2ra05935e-f9.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f06a/9847348/37b7485d264e/d2ra05935e-f9.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f06a/9847348/17aea42b1429/d2ra05935e-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f06a/9847348/dd97f8939459/d2ra05935e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f06a/9847348/9d2eb9532b04/d2ra05935e-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f06a/9847348/37b7485d264e/d2ra05935e-f9.jpg

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