Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 3, Issue 21, Pages 5484-5489Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc00757g
Keywords
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Funding
- National Research Foundation of Korea Grant - Korean Government [NRF-2013R1A2A2A04015089]
- Technology Innovation Program - Ministry of Trade, industry & Energy (MI, Korea) [10050315]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10050315] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [22A20130012424] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Mn4+-activated K2SiF6 phosphors for use in light emitting diode (LED) applications have recently attracted a great deal of attention since they exhibit an advantage over conventional wide band-type red-light-emitting phosphors. K2SiF6:Mn4+ phosphors have shown extremely narrow emission peaks in wavelengths ranging from 620 to 630 nm, leading to a higher color-rendering index and larger color gamut for the final LED applications. We examined the decay behavior in terms of radiative and non-radiative rates along with a reliable evaluation of Mn4+ concentrations. Inter-activator energy transfer played a significant role in the luminescence process in this well-known narrow peak emission type of the red phosphor K2SiF6:Mn4+.
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