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- W4306248875 abstract "The excellent narrow-band emitters, especially the green ones, are regarded as a pivotal research direction for light-emitting diodes (LED) backlights in liquid-crystal displays (LCDs). A nearly single-peak green emission centered at 513 nm with a full width at half maximum of 28 nm is reached in KAl11O17:0.1Eu2+, 0.15Mn2+ phosphor via nearly 100% energy transfer (ET) efficiency, and the extended X-ray absorption fine structure analysis elucidates its mechanism, which is that Eu2+ and Mn2+ are constrained to form Eu2+–Mn2+ pairs with a small distance 3.7 Å caused by the local environment relaxation inducement. Meanwhile, by creating an unhindered energy flow between Eu2+, Mn2+ and K+/O2− defect levels through ET and multilevel electron trapped and recombination process, the KAO:Eu2+, Mn2+ phosphors perform superb photoluminescence property with a high color purity of 83%, an excellent thermal stability (94%@200°C), and unexceptionable internal and external quantum efficiencies of 91.7% and 66.4%, which all are superior to characteristics of commercial β-SiAlON:Eu2+ phosphor. Moreover, the white LED fabricated using KAO:Eu2+, Mn2+ to provide green component shows a wide color gamut of 105% National Television System Committee. These results indicate a potential for an application of our material in LCD–LED backlights, and the design of such local relaxation-induced structure provides a significative reference to develop the new narrow-band emitters." @default.
- W4306248875 created "2022-10-15" @default.
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- W4306248875 date "2022-10-30" @default.
- W4306248875 modified "2023-10-17" @default.
- W4306248875 title "Design of a superb Eu <sup>2+</sup> –Mn <sup>2+</sup> co‐doped narrow‐band green phosphor via nearly 100% energy transfer efficiency" @default.
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- W4306248875 doi "https://doi.org/10.1111/jace.18854" @default.
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