Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 119, Issue 50, Pages 28090-28098Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.5b05825
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Funding
- National Science Foundation of China [51372214, 61233010]
- Project of Department of Science and Technology of Hunan Province of China [2014FJ3124]
- Open Project of State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Science [RERU2013017]
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A novel near-infrared luminescent material Ca14Zn6Al10O35:Mn4+, Er3+ has been synthesized by a sol-gel method. The Ca14Zn6Al10O35:Mn4+, Er3+ phosphor exhibits strong near-infrared emission around 1540 nm with a wide excitation band extending from 250 to 550 nm. Efficient energy transfer from Mn4+ to Er3+ in Ca14Zn6Al10O35 is observed and gives about 13 times enhancement on the Er3+-1540 nm emission excited at 455 nm, which makes it convenient to obtain high-power emission by commercial GaN LED pumping. The energy transfer mechanism is discussed based on Dexters theory and Inokuti-Hirayama/Yokota-Tanimoto models. It is believed that a dipole-dipole interaction between Mn4+ and Er3+ ions is responsible for the large enhancement of 1540 nm emission.
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