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Synthesis of Eu³⁺-Doped NaGd₉Si₆O₂₆ Sub-Microcrystals from a NaGdF₄@SiO₂ Structure.

ABSTRACT: Rare earth silicate phosphors of high quantum efficiency with a stable performance are promising materials in the fields of display and illumination. The grain sizes of products synthesized via the conventional solid-state reaction method are usually too large to satisfy the requirements of color cast and extraction efficiency in high-resolution light-emitting devices (LEDs). We designed a synthetic route and successfully fabricated rare earth silicate NaGd₉Si₆O₂₆ (NGSO) sub-microcrystals with a size ranging from 550 to 1200 nm. The reaction mechanism and optical properties were systematically investigated. The quantum efficiency of Eu³⁺-activated NGSO sub-microcrystals was about 36.6%. The LED encapsulated with these sub-microcrystals showed lower color deviation and higher lumen efficiency and lumen flux compared to that with NGSO fabricated using the conventional solid state reaction method.

SUBMITTER: Du T

PROVIDER: S-EPMC10222598 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature

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Synthesis of Eu3+-Doped NaGd9Si6O26 Sub-Microcrystals from a NaGdF4@SiO2 Structure.

Du Tianyun T Xue Xiaojie X Han Xiuxun X

Molecules (Basel, Switzerland) 20230520 10

Rare earth silicate phosphors of high quantum efficiency with a stable performance are promising materials in the fields of display and illumination. The grain sizes of products synthesized via the conventional solid-state reaction method are usually too large to satisfy the requirements of color cast and extraction efficiency in high-resolution light-emitting devices (LEDs). We designed a synthetic route and successfully fabricated rare earth silicate NaGd9Si6O26</sub ...[more]

PMID: 37241954

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