Facile hydrothermal synthesis of rare earth hydroxycarbonate phosphors for high-performance warm white LEDs

IF 4.9

RSC sustainability Pub Date : 2025-07-04 DOI:10.1039/D5SU00406C

Haoxuan Zeng, Qiao Liang, Lu He, Ziyuan Li, Taihui Chen and Xiaoli Wu

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Abstract

The traditional synthesis of inorganic phosphors often requires complex procedures, including precursor preparation and high-temperature treatment. In contrast, this study introduces a simplified hydrothermal precipitation approach for fabricating europium/terbium hydroxycarbonates (Eu₂(OH)_x(CO₃)_y(NO₃)_(6−x−2y)·nH₂O and analogous Tb compound). The synthesized materials demonstrate high thermal stability, with high quenching activation energies (E_a(Eu) = 0.283 eV, E_a(Tb) = 0.221 eV). When applied in white LED devices, these phosphors demonstrate warm white light emission with a color rendering index (CRI) reaching R_a = 84.0 and correlated color temperature (CCT) of 3865 K, making them promising for lighting applications.

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高性能暖白光led用稀土羟基碳酸盐荧光粉的水热合成

传统无机荧光粉的合成通常需要复杂的程序，包括前驱体的制备和高温处理。相比之下，本研究介绍了一种简化的水热沉淀法来制备铕/铽羟基碳酸盐(Eu2(OH)x(CO3)y（NO3)（6−x−2y）·nH2O和类似的Tb化合物）。合成的材料热稳定性好，具有较高的猝灭活化能(Ea（Eu) = 0.283 eV, Ea(Tb) = 0.221 eV）。当应用于白光LED器件时，这些荧光粉表现出温暖的白光发射，显色指数（CRI）达到Ra = 84.0，相关色温（CCT）为3865 K，使其在照明应用中具有前景。

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来源期刊

RSC sustainability

CiteScore

0.60

自引率

0.00%

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