Photoluminescence of Red-Emitting Phosphor Sr2CeO4: Eu3+, Sm3+ for Light-Emitting Diodes

DOI

10.2991/emim-17.2017.16How to use a DOI?

Keywords

Optical materials; Rare earth ions; Luminescence properties; White LEDs

Abstract

The red-emitting phosphor Sr2CeO4: Eu3+, Sm3+ was synthesized by conventional high-temperature solid-state method. X-ray diffraction, and photoluminescence spectra were used to characterize the as-synthesized phosphor. In Eu3+ singly doped Sr2CeO4 phosphors, Eu3+ ion showed a weaker 7F0-5L6 transition at 395 nm with a narrow line and could not be efficiently excited by the NUV-LED chip. In Sm3+, Eu3+ co-doped Sr2CeO4 phosphors, the energy transfer from Sm3+ to Eu3+ in Sr2CeO4 host is observed and investigated in detail. The absorption band around 404nm was broadened and the intensities of the main emission line (5D0 7F2 transition of Eu3+ at 614nm) were strengthened because the energy transfer from Sm3+ to Eu3+. Moreover, The chromaticity coordinates of Sr2CeO4: Sm3+ can be regulated to approach the NTSC standard values of red phosphor by codoping Eu3+ ions. The photoluminescence properties suggest that novel Sr2CeO4: Eu3+, Sm3+ phosphor might have a potential research value on white-LEDs.

Copyright

© 2017, 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  - Haiyan Jiao
AU  - Cairang Li Mao
AU  - Rangcuo Cai
PY  - 2017/04
DA  - 2017/04
TI  - Photoluminescence of Red-Emitting Phosphor Sr2CeO4: Eu3+, Sm3+ for Light-Emitting Diodes
BT  - Proceedings of the 7th International Conference on Education, Management, Information and Mechanical Engineering (EMIM 2017)
PB  - Atlantis Press
SP  - 78
EP  - 83
SN  - 2352-538X
UR  - https://doi.org/10.2991/emim-17.2017.16
DO  - 10.2991/emim-17.2017.16
ID  - Jiao2017/04
ER  -