Electronic structure and luminescence properties of BaSi2O2N2:Eu2+ phosphor for white LEDs

DOI

10.2991/icmse-15.2015.123How to use a DOI?

Keywords

Oxynitride phosphor; Precursor method; White LEDs; Photoluminescence

Abstract

Bluish-green BaSi2O2N2:Eu2+ phosphors were synthesized by a method using Ba2SiO4 as a precursor. The luminescence properties and formation process of BaSi2O2N2:Eu2+ phosphors formed by the method at varied Eu2+ concentrations and varied temperatures were investigated by X-ray diffraction (XRD), fluorescence spectrometer photometer (PL) and scanning electron microscope (SEM) respectively. Compared with a conventional solid-state reaction method, this method provided increased crystallinity and luminescence efficiency. A single phase of BaSi2O2N2:Eu2+ was formed in the precursor method. Under 330 nm excitation, the BaSi2O2N2:Eu2+ phosphors showed a broad emission band with a peak of 498 nm for varied Eu2+ concentrations and showed the maximum emission peak intensity when Eu2+ doping amount was 4%. These excellent luminescence properties suggested that BaSi2O2N2:Eu2+ is an excellent phosphor for white LEDs.

Copyright

© 2015, 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  - Huayan Pan
AU  - Dong Luo
AU  - Le Wang
AU  - Yanghui Li
PY  - 2015/12
DA  - 2015/12
TI  - Electronic structure and luminescence properties of BaSi2O2N2:Eu2+ phosphor for white LEDs
BT  - Proceedings of the 2015 6th International Conference on Manufacturing Science and Engineering
PB  - Atlantis Press
SP  - 690
EP  - 695
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmse-15.2015.123
DO  - 10.2991/icmse-15.2015.123
ID  - Pan2015/12
ER  -