Orange-Red Emitting Phosphors Sm3+-Activated Borosilicate for near UV-based White LEDs

DOI

10.2991/lemcs-15.2015.69How to use a DOI?

Keywords

Sr3B2SiO8: Sm3+; Luminescence; Phosphor; Energy transfer; Lifetime

Abstract

A new phosphor Sr3B2SiO8: Sm3+ has been synthesized via solid-state reaction process. Emission/excitation spectra and photoluminescence decay behaviors were investigated in detail. The phosphors Sr3B2SiO8: Sm3+ can be excited under the excitation of 405 nm, Sr3B2SiO8: Sm3+ could show orange-red emitting light which cover the region from 450 to 700 nm. The intensity of Sr3B2SiO8: Sm3+ phosphor increases with Sm3+ ions adding, then gradually decreases as the doping concentration becomes higher than 0.03, it occurs concentration quenching the possibility of energy transfer between Sm3+ ions increases, we can roughly estimate the critical distance of energy transfer (Rc) according to the report of Blasse, after calculating, the Rc value is about 12.6 Å. When the Sm3+ at 0.03 mol, the chromaticity coordinates of Sr3B2SiO8: Sm3+ is (0.62, 0.34) which closed to the standard CIE of red light (0.67, 0.33). The results showed that Sr3B2SiO8: Sm3+ phosphors may be promising phosphor candidate in UV 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  - Hong Yu
AU  - Jinlei Chen
PY  - 2015/07
DA  - 2015/07
TI  - Orange-Red Emitting Phosphors Sm3+-Activated Borosilicate for near UV-based White LEDs
BT  - Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science
PB  - Atlantis Press
SP  - 357
EP  - 361
SN  - 1951-6851
UR  - https://doi.org/10.2991/lemcs-15.2015.69
DO  - 10.2991/lemcs-15.2015.69
ID  - Yu2015/07
ER  -