Preparation and Characterization of Zn/Mg Co-doped aluminate phosphor for white LEDs

DOI

10.2991/icsmim-15.2016.36How to use a DOI?

Keywords

White LEDs; Zn/Mg co-doped; Aluminate phosphor; Solution combustion

Abstract

The Eu2+ activated Zn/Mg co-doped aluminate phosphors for white LEDs was prepared by the solution combustion method at 600 successfully. The crystal structure model of the phosphor was built, and the band structure and density of states of phosphor were calculated using CASTEP program based on density functional theory. The crystal structure, morphology and luminescent properties of samples were analyzed by the X-ray diffraction (XRD), scanning electron microscope (SEM) and spectrofluorometer, respectively. The results show that sample has a single emission band and centered at 470nm under ultraviolet (UV) 330nm excitation, which corresponds to 4f65d 4f7 8S7/2 transition of Eu2+. The crystal structure of the doped phosphors is the same as simple phosphors. The phosphors show the maximum emission peak intensity when the ratio of Sr and Ca is 2:1 and the ratio of Mg and Zn is 3:1, and the dispersion was improved obviously.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Rubiao Chen
AU  - Dong Luo
AU  - Huayan Pan
AU  - Tuo Wu
AU  - Le Wang
PY  - 2016/01
DA  - 2016/01
TI  - Preparation and Characterization of Zn/Mg Co-doped aluminate phosphor for white LEDs
BT  - Proceedings of the 2015 4th International Conference on Sensors, Measurement and Intelligent Materials
PB  - Atlantis Press
SP  - 190
EP  - 196
SN  - 2352-538X
UR  - https://doi.org/10.2991/icsmim-15.2016.36
DO  - 10.2991/icsmim-15.2016.36
ID  - Chen2016/01
ER  -