NDLI: The δ value dependence of photoluminescence in green-emitting Ba$_{3}$Si$_{6}$O$_{12−δ}$N$_{2+2/3δ}$:Eu$^{2+}$ phosphors for white light-emitting diodes

Content Provider	Springer Nature Link
Author	Chen, Guantong Zhuang, Weidong Hu, Yunsheng Liu, Yuanhong Liu, Ronghui He, Huaqiang
Copyright Year	2013
Abstract	Green emitting Eu$^{2+}$-doped Ba$_{3}$Si$_{6}$O$_{12−δ }$N$_{2+2/3δ }$ phosphors with δ value varying in the range of −0.6 to 1.8 were synthesized by firing the raw materials of α-Si$_{3}$N$_{4}$, SiO$_{2}$, BaCO$_{3}$ and Eu$_{2}$O$_{3}$ at 1,350 °C for 12 h under a N$_{2}$/H$_{2}$ atmosphere. The solid-solution and luminescence properties of as-prepared Ba$_{3}$Si$_{6}$O$_{12−δ }$N$_{2+2/3δ }$:Eu$^{2+}$ phosphors were investigated by XRD, O/N automatic analyzer and UV–Vis spectrophotometer. The composition-dependent solid solution of Ba$_{3}$Si$_{6}$O$_{12−δ }$N$_{2+2/3δ }$ with small range of δ is established. The emission wavelength with a range of 522–545 nm by varying δ value as a function of dopant Eu$^{2+}$ is observed in this phosphor. The emission band shows a shift to higher energy and a diverse quenching concentration with an increase of N/O ratio in Ba$_{3}$Si$_{6}$O$_{12−δ }$N$_{2+2/3δ }$:Eu$^{2+}$ phosphors. The measured results suggest that Ba$_{3}$Si$_{6}$O$_{12−δ }$N$_{2+2/3δ }$:Eu$^{2+}$ possesses broad applications as an effective green phosphor in producing white light-emitting diodes.
Starting Page	2176
Ending Page	2181
Page Count	6
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	24
Issue Number	6
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2013-03-27
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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