Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 3, Issue 17, Pages 4445-4451Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc00236b
Keywords
-
Funding
- National Natural Science Foundations of China [21171071, 21371062]
- Guangdong Natural Science Foundation [S2013030012842]
- Science and Technology Innovating Project - Guangdong Provincial Educational Commission of China [2013KJCX0030]
- Key Academic Program of the 3rd phase '211 Project' of South China Agricultural University
Ask authors/readers for more resources
Red-emitting CaAlSiN3:Eu2+ phosphors with different doping contents have been synthesized by solid-state reaction using calcium hydride as a calcium source. The emergence of persistent luminescence in CaAlSiN3:Eu2+ was originated from electron traps introduced by the partial substitutions of O in N sites to form O-N(center dot) positive trap levels at low Eu2+ concentration. The broad thermoluminescence emission bands indicated multiple trap levels, in which the shallow traps were mainly responsible for the red persistent luminescence; besides, the deep trap electrons could be efficiently released under extra NIR (980 nm) stimulation, resulting in enhanced photoluminescence and phosphorescence. It is expected that the enhanced emission under UV-NIR simultaneous excitation may be a promising technique to investigate the trap distributions in optical energy storage materials.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available