Improving the luminescence properties of the near-infrared phosphor Ca0.8Sr0.2O:Eu2+via energy transfer and its application in the concentration detection of ethanol solutions†

IF 4.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

RSC Advances Pub Date : 2025-07-01 DOI:10.1039/D5RA02418H

Yuxuan Liang, Pengfei Du, Yanhong Wei, Xurui Hu, Xiaojie Li, Zhijun Wang, Jie Gong, Mengdi Liu, Panlai Li and Wenge Ding

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Abstract

In this work, a near-infrared (NIR) phosphor Ca_0.8Sr_0.2O:Eu²⁺ was prepared via a solid-state method, and its luminescence properties were improved by co-doping with Ce³⁺ ions. The decay curves of Ca_0.8Sr_0.2O:Ce³⁺, Eu²⁺ confirmed that there was an obvious energy transfer from Ce³⁺ to Eu²⁺, which enhanced the quantum efficiency of Ca_0.8Sr_0.2O:Eu²⁺. The thermal stability can also be enhanced by introducing Ce, which reduces the probability of non-radiative transitions at elevated temperatures, thereby minimizing electron loss. An NIR light emitting diode (LED) was fabricated by combining a blue LED chip with Ca_0.8Sr_0.2O:Ce³⁺, Eu²⁺, which was applied for the concentration detection of ethanol solutions.

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利用能量转移改善近红外荧光粉ca0.8 sr0.2:Eu2+的发光性能及其在乙醇溶液浓度检测中的应用

本文采用固态法制备了近红外（NIR）荧光粉ca0.8 sr0.2:Eu2+，并通过与Ce3+离子共掺杂改善了其发光性能。ca0.8 sr0.2:Ce3+， Eu2+的衰减曲线证实了Ce3+向Eu2+有明显的能量转移，从而提高了ca0.8 sr0.2:Eu2+的量子效率。热稳定性也可以通过引入Ce来增强，这降低了在高温下非辐射跃迁的可能性，从而最大限度地减少了电子损失。将蓝色LED芯片与ca0.8 sr0.2:Ce3+， Eu2+结合制成近红外发光二极管（LED），用于乙醇溶液的浓度检测。

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来源期刊

RSC Advances chemical sciences-

CiteScore

7.50

自引率

2.60%

发文量

3116

审稿时长

1.6 months

期刊介绍： An international, peer-reviewed journal covering all of the chemical sciences, including multidisciplinary and emerging areas. RSC Advances is a gold open access journal allowing researchers free access to research articles, and offering an affordable open access publishing option for authors around the world.