Synthesis and Photoluminescence of Tb3+-activated Ca3La2 (BO3)4 Phosphor

被引：7

作者：

Srinivas, M. ^{[1
]}

机构：

[1] Osmania Univ, Dept Phys, Hyderabad 500007, Andhra Pradesh, India

来源：

MATERIALS TODAY-PROCEEDINGS | 2016年 / 3卷 / 10期

关键词：

Optical materials; Chemical synthesis; X-ray diffraction; Photo Luminescence; VUV-VISIBLE REGION; LUMINESCENT PROPERTIES; EU2+ LUMINESCENCE; CRYSTAL-STRUCTURE; CA; SR; BA; TRANSITION; CAAL2B2O7; MG;

D O I：

10.1016/j.matpr.2016.11.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Phosphor Ca3La2(BO3)(4) materials doped with terbium ions were prepared by high temperature solid state reaction method. The structural properties, surface morphology and elemental analysis of terbium doped calcium lanthanum borate phosphors are investigated via Xray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDAX). The main diffraction peaks of the orthorhombic structure observed in all the samples. Strong photoluminescence (PL) spectrum was obtained at 543 nm under UV excitation. Emission spectra can be assigned to the emission lines of terbium activators corresponding to 422, 490, 543, 588 and 622 nm attributed to the D-5(4) -> F-7(J) (J = 2, 3, 4, 5, 6) transitions of Tb3+ ions from a spectral range of 400-750 nm (whole visible spectral region) observed in the PL emission spectrum. PL peak intensity was found to increase with increase in the dopant concentration. These phosphors may provide a new kind of luminescent material for light emitting diodes under UV excitation. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：3719 / 3725

页数：7

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