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Synthesis and photoluminescence properties of Eu3+ -activated Ba2 Mg(PO4 )2 phosphor.
Luminescence ( IF 2.9 ) Pub Date : 2019-12-16 , DOI: 10.1002/bio.3751
S K Ramteke 1 , N S Kokode 2 , A N Yerpude 1 , G N Nikhare 3 , S J Dhoble 4
Affiliation  

In this paper, we have reported the photoluminescence (PL) properties of the Ba2 Mg(PO4 )2 :Eu3+ phosphor synthesized using a wet chemical method. The preliminary scanning electron microscopy (SEM) investigation of the sample revealed irregular surface morphology with particle sizes in the 10-50 μm range. The strongest PL excitation peak was observed at 396 nm. The emission spectra indicated that this phosphor can be effectively excited by the 396 nm wavelength. Upon 396 nm excitation, the emission spectrum showed characteristics peaks located at 592 nm and 615 nm. These intense orange-red emission peaks were obtained due to f→f transitions of Eu3+ ions. The emission peak at 592 nm is referred to as the magnetic dipole 5 D0 →7 F1 transition and the emission peak at 615 nm corresponded to the electric dipole 5 D0 →7 F2 transition of Eu3+ . The Commission Internationale de l'Eclairage (CIE) coordinates of the Ba2 Mg(PO4 )2 :Eu3+ phosphor were found to be (0.586, 0.412) for wavelength 592 nm and (0.680, 0.319) for wavelength 615 nm situated at the edge of the CIE diagram, indicating high colour purity of phosphors. Due to the high emission intensity and a good excitation profile, Eu3+ -doped Ba2 Mg(PO4 )2 phosphor may be a promising orange-red phosphor candidate for solid-state lighting applications.

中文翻译:

Eu3 +活化的Ba2 Mg(PO4)2荧光粉的合成及光致发光性能。

在本文中,我们已经报道了使用湿化学方法合成的Ba2 Mg(PO4)2:Eu3 +荧光粉的光致发光(PL)特性。样品的初步扫描电子显微镜(SEM)研究表明,颗粒尺寸在10-50μm范围内的表面形态不规则。在396 nm处观察到最强的PL激发峰。发射光谱表明该磷光体可以被396 nm波长有效地激发。在396 nm激发后,发射光谱显示出位于592 nm和615 nm处的特征峰。这些强的橙红色发射峰是由于Eu3 +离子的f→f跃迁而获得的。592 nm处的发射峰称为磁偶极子5 D0→7 F1跃迁,而615 nm处的发射峰称为Eu3 +的电偶极子5 D0→7 F2跃迁。发现Ba2 Mg(PO4)2:Eu3 +荧光粉的国际照明委员会(CIE)坐标在波长592 nm处为(0.586,0.412),而在波长615 nm处为(0.680,0.319),位于CIE图,表明磷光体的高色纯度。由于高发射强度和良好的激发轮廓,Eu3 +掺杂的Ba2 Mg(PO4)2磷光体可能是固态照明应用中有希望的橙红色磷光体候选物。
更新日期:2019-12-16
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