Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 4, Issue 31, Pages 7443-7448Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6tc02254e
Keywords
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Funding
- National Natural Science Foundation of China
- Applied Basic Research Project of Yunnan Province [21261027, 2014FB147]
- Joint Funds of the National Natural Science Foundation of China and Guangdong Province
- Research Fund for the Doctoral Program of Higher Education of China
- Guangdong Province for industrial applications of rare earth materials [U1301242, 20130171130001, 2012B09000026]
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In this work, a Cs2ZrF6: Mn4+ red phosphor, a novel and efficient supplement for commercial Y3Al5O12:Ce3+ type white light-emitting diodes (WLEDs), is successfully fabricated on a large scale through a cation exchange method using K2MnF6 as the Mn4+ source at ambient temperature. The crystal structure and morphology were characterized using powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS), in detail. The complex is well crystallized in a single-phase with particulate morphology and presents sharp red emissions under blue light illumination. From the aspects of R-a and T-c, the optical performance of a WLED made with the Cs2ZrF6:Mn4+ red phosphor supplement is significantly improved and it can be used for indoor lighting applications.
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