Synthesis and photoluminescence study of a single dopant near white light emitting Li4CaB2O6:Dy3+ nanophosphor

被引：29

作者：

Neharika ^{[1
]}

Kumar, Vinay ^{[1
,2
]}

Singh, Vivek K. ^{[1
]}

Sharma, J. ^{[1
]}

Ntwaeaborwa, O. M. ^{[2
]}

Swart, H. C. ^{[2
]}

机构：

[1] Shri Mata Vaishno Devi Univ, Dept Phys, Katra 182320, J&K, India

[2] Univ Free State, Dept Phys, POB 339, ZA-9300 Bloemfontein, South Africa

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 688卷

关键词：

Borates; wLEDs; Combustion; Nanophosphor; Li4CaB2O6:Dy3+; OPTICAL-PROPERTIES; PHOSPHOR; LUMINESCENCE; RED; EMISSION;

D O I：

10.1016/j.jallcom.2016.07.039

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, a series of trivalent Dy doped Li4CaB2O6 nanocrystalline phosphors were synthesized by combustion method using urea as an organic fuel and their structural, optical and photoluminescence (PL) properties were investigated using X-Ray Diffraction, Transmission electron microscopy, diffuse reflectance spectroscopy and PL spectroscopy. The prepared nanophosphor crystallized in an orthorhombic phase with a space group of pnnm (113). The electronic band gap of the prepared nanophosphor was estimated as 5.2 eV. The PL study revealed that the Li4CaB2O6:Dy3+ nanophosphor emitted yellowish white light arising from the two dominant emission bands one in the blue region corresponding to the F-4(9/2) -> H-6(15/2) transition and the other in the yellow region corresponding to the F-4(9/2) -> H-6(15/2) transition under near ultraviolet excitation. The study confirms the feasibility of the prepared nanophosphor to generate white light revealing its potential as a single dopant near white light emitting nanophosphor for white-light emitting diodes. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：939 / 945

页数：7