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- W2336601746 abstract "Narrow-band red-emitting phosphors are a critical component in phosphor-converted light-emitting diodes for highly efficient illumination-grade lighting. In this work, we report the discovery of a quantitative descriptor for narrow-band Eu2+-activated emission identified through a comparison of the electronic structure of known narrow-band and broad-band phosphors. We find that a narrow emission bandwidth is characterized by a large splitting of more than 0.1 eV between the two highest Eu2+ 4f7 bands. By incorporating this descriptor in a high throughput first principles screening of 2,259 nitride compounds, we identify five promising new nitride hosts for Eu2+-activated red-emitting phosphors that are predicted to exhibit good chemical stability, thermal quenching resistance and quantum efficiency, as well as narrow-band emission. Our findings provide important insights into the emission characteristics of rare-earth activators in phosphor hosts, and a general strategy to the discovery of phosphors with a desired emission peak and bandwidth." @default.
- W2336601746 created "2016-06-24" @default.
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- W2336601746 date "2016-05-16" @default.
- W2336601746 modified "2023-10-14" @default.
- W2336601746 title "Electronic Structure Descriptor for the Discovery of Narrow-Band Red-Emitting Phosphors" @default.
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- W2336601746 doi "https://doi.org/10.1021/acs.chemmater.6b01496" @default.
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