Orange-Red Emitting Phosphors Sm3+-Activated Borosilicate for near UV-based White LEDs
- 10.2991/lemcs-15.2015.69How to use a DOI?
- Sr3B2SiO8: Sm3+; Luminescence; Phosphor; Energy transfer; Lifetime
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.
- © 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/).
Cite this article
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 -