bamgsio4: eu2 +荧光粉的温度依赖性发光特性

EnergyRN: Electrochemical Energy Engineering (EnergyRN) (Topic) Pub Date : 2021-03-01 DOI:10.2139/ssrn.3708720

Dan Wang, Lingli Wang

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引用次数: 2

摘要

本文研究了Ba1-xMgSiO4:xEu2+(0.01≤x≤0.07)的温度依赖性光致发光特性。室温激发和发射光谱表明，掺杂的Eu2+离子占据了三个不同的Ba2+位点。随着温度的升高，Ba1-xMgSiO4:xEu2+ (x=0.02)的光谱形状在400 ~ 650 nm范围内发生显著变化。在492nm处的发射有明显的红移。发射强度与温度呈非线性关系。通过分析Ba1-xMgSiO4:xEu2+(0.01≤x≤0.07)中Eu2+离子之间的能量转移，系统地研究了其随温度变化的发光特性。当温度从298 K上升到523 K时，Ba1-xMgSiO4:xEu2+ (x=0.02)的色坐标先向绿色区域移动，然后向红色区域移动。Ba1-xMgSiO4:xEu2+ (x=0.02)的绝对灵敏度和相对灵敏度最大值分别为4.242 × 10−3 K−1 (423 K)和0.3244 % K−1 (398 K)。

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Temperature Dependent Luminescent Characterization of BaMgSiO 4:Eu 2+ Phosphor

Abstract In this paper, the temperature-dependent photoluminescence properties of Ba1-xMgSiO4:xEu2+ (0.01≤x≤0.07) are investigated. The room temperature excitation and emission spectra indicate that the doping Eu2+ ions occupy three different Ba2+ sites. With rising the temperature, the spectra shape of Ba1-xMgSiO4:xEu2+ (x=0.02) changes significantly in the region of 400-650 nm. The emission at 492 nm has a significant red-shift. The intensity of the emission displays a nonlinear dependence on the temperature. The temperature-dependent luminescent properties are systematically investigated by analyzing the energy transfer among the Eu2+ ions in Ba1-xMgSiO4:xEu2+ (0.01≤x≤0.07). When the temperature rises from 298 to 523 K, the color coordinates of Ba1-xMgSiO4:xEu2+ (x=0.02) first shift to the green and then to the red region. The maximal value of the absolute and relative sensitivity of Ba1-xMgSiO4:xEu2+ (x=0.02) is 4.242 × 10−3 K−1 (at 423 K) and 0.3244 % K−1 (at 398 K), respectively.

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EnergyRN: Electrochemical Energy Engineering (EnergyRN) (Topic)

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