Journal
INORGANIC CHEMISTRY
Volume 53, Issue 22, Pages 11985-11990Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic501641q
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Funding
- National Natural Science Foundation of China [21271167, 11304309]
- Fund for Creative Research Groups [21221061]
- National Basic Research Program of China (973 Program) [2014CB6438003]
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A new, highly efficient deep red-emitting phosphor Ca14Al10Zn6O35:Mn4+ was developed as a component of solid-state white light-emitting diodes (LEDs). The structural and optical characterization of the phosphor is described. The phosphor exhibits strong emission in the range of 650-700 nm when excited by 460 nm excitation, with a quantum efficiency approaching 50%. Concentration dependence of Mn4+ luminescence in Ca14Al10Zn6O35:Mn4+ is investigated. Attempts to understand the thermal stability on the basis of the thermal quenching characteristics of Ca14Al10Zn6O35:Mn4+ is presented. The results suggest that phosphors deriving from Ca14Al10Zn6O35:Mn4+ have potential application for white LEDs. In addition, influence of cation substitution on the luminescence intensity of these phosphors is elucidated.
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