球形Na(La,RE)(MoO4)2(RE=Eu/Yb,Er)的合成、上/下转换光致发光及光学测温

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nano Pub Date : 2023-10-21 DOI:10.1142/s1793292023500960

Changshuai Gong, Bowen Wang, Meng Sun, Jiantong Wang, Xuyan Xue, Xuejiao Wang

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The room temperature and temperature-dependent up/down conversion luminescence properties of the resulting Na(La,RE)(MoO[Formula: see text] (RE = Eu/Yb-Er) phosphors were analyzed in detail. The temperature-sensing performances for the two phosphors in both fluorescence intensity ratio (FIR) and FL modes were evaluated. Classical down and up-conversion photoluminescence (PL) from Eu[Formula: see text] and Er[Formula: see text] were observed. The down conversion phosphors were proved to be capable of sensing temperature via FL mode, and the maximum absolute sensitivity [Formula: see text] and maximum relative sensitivity [Formula: see text] were found to be [Formula: see text][Formula: see text]K[Formula: see text] (298[Formula: see text]K) and [Formula: see text][Formula: see text]K[Formula: see text] (523[Formula: see text]K), respectively. 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引用次数: 0

摘要

本文以稀土氢氧化物(La,RE)(OH) so4为自我牺牲模板，制备了球形Na(La,RE)(MoO[公式:见文](RE = Eu/Yb-Er)双钼酸盐。采用x射线衍射仪(XRD)、扫描电镜(SEM)、荧光分光光度计和傅里叶变换红外分光光度计(FT-IR)对样品的组成、结构、形貌、上下转换发光和荧光寿命(FL)进行了表征。结果表明，采用该方法可以得到高纯度的球形Na(La,RE)(MoO)[公式:见文](RE = Eu/Yb-Er)样品。详细分析了制备的Na(La,RE)(MoO[公式见文](RE = Eu/Yb-Er)荧光粉的室温和随温度变化的上/下转换发光特性。对两种荧光粉在荧光强度比(FIR)和荧光强度比(FL)模式下的温度传感性能进行了评价。观察了Eu[公式:见文]和Er[公式:见文]的经典下转换和上转换光致发光(PL)。下转换荧光粉可以通过FL模式感应温度，最大绝对灵敏度[公式:见文]和最大相对灵敏度[公式:见文]分别为[公式:见文][公式:见文]K[公式:见文](298[公式:见文]K)和[公式:见文][公式:见文]K[公式:见文]K(523[公式:见文]K)。上转换荧光粉Na(La,Yb,Er)(MoO[公式:见文])通过热耦合的2 H[公式:见文]，4 S[公式:见文]能级(I[公式:见文]/I[公式:见文])能很好地通过FIR模式感应温度，最大绝对灵敏度[公式:见文]和最大相对灵敏度[公式:见文]分别为[公式:见文][公式:见文]K[公式:见文](523[公式:见文]K)和[公式:见文][公式:见文][公式:见文][公式:见文][公式:见文][公式:见文][公式:见文]]K[公式:见文](348[公式:见文]K)。

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Synthesis of spherical Na(La,RE)(MoO₄)₂(RE=Eu/Yb,Er), up/down conversion photoluminescence, and optical thermometry

In this work, spherical Na(La,RE)(MoO[Formula: see text] (RE = Eu/Yb-Er) double molybdates were prepared using the rare earth hydroxide (La,RE)(OH)SO 4 as a self-sacrificing template. The composition, structure, morphology, up/down conversion luminescence and fluorescence lifetime (FL) of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), fluorescence spectrophotometer, and Fourier transform infrared (FT-IR) spectrophotometer. The results indicate that highly pure spherical Na(La,RE)(MoO[Formula: see text] (RE = Eu/Yb-Er) samples can be obtained from the proposed route. The room temperature and temperature-dependent up/down conversion luminescence properties of the resulting Na(La,RE)(MoO[Formula: see text] (RE = Eu/Yb-Er) phosphors were analyzed in detail. The temperature-sensing performances for the two phosphors in both fluorescence intensity ratio (FIR) and FL modes were evaluated. Classical down and up-conversion photoluminescence (PL) from Eu[Formula: see text] and Er[Formula: see text] were observed. The down conversion phosphors were proved to be capable of sensing temperature via FL mode, and the maximum absolute sensitivity [Formula: see text] and maximum relative sensitivity [Formula: see text] were found to be [Formula: see text][Formula: see text]K[Formula: see text] (298[Formula: see text]K) and [Formula: see text][Formula: see text]K[Formula: see text] (523[Formula: see text]K), respectively. The up conversion phosphors Na(La,Yb,Er)(MoO[Formula: see text] were well capable of sensing temperature via FIR mode through thermally coupled 2 H[Formula: see text], 4 S[Formula: see text] levels (I[Formula: see text]/I[Formula: see text], and the maximum absolute sensitivity [Formula: see text] and maximum relative sensitivity [Formula: see text] were found to be [Formula: see text][Formula: see text]K[Formula: see text] (523[Formula: see text]K) and [Formula: see text][Formula: see text]K[Formula: see text] (348[Formula: see text]K), respectively.

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来源期刊

Nano 工程技术-材料科学：综合

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

1.6 months

期刊介绍： NANO is an international peer-reviewed monthly journal for nanoscience and nanotechnology that presents forefront fundamental research and new emerging topics. It features timely scientific reports of new results and technical breakthroughs and also contains interesting review articles about recent hot issues. NANO provides an ideal forum for presenting original reports of theoretical and experimental nanoscience and nanotechnology research. Research areas of interest include: nanomaterials including nano-related biomaterials, new phenomena and newly developed characterization tools, fabrication methods including by self-assembly, device applications, and numerical simulation, modeling, and theory. However, in light of the current stage development of nanoscience, manuscripts on numerical simulation, modeling, and/or theory only without experimental evidences are considered as not pertinent to the scope of NANO.