Broad visible emission from a blue-light-excitable single-phase NaLaS ₂ :Bi ³⁺ phosphor for high-CRI white LEDs

Yutong Dong; Hong Wang; Song Ma; Limin Wei; Ruizhu Fan; Mingming Xing; Qiang Pang; Yao Fu; Ge Zhu; Ying Tian

doi:10.1039/d6tc01455k

January 1, 2026Journal of Materials Chemistry C

Broad visible emission from a blue-light-excitable single-phase NaLaS ₂ :Bi ³⁺ phosphor for high-CRI white LEDs

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Key Points

To develop and evaluate a blue-light-excitable, single-phase NaLaS2:Bi3+ phosphor capable of producing broadband visible emission for high-quality white light-emitting diodes.
Synthesized and characterized a single-phase NaLaS2:Bi3+ phosphor excitable under blue light.
Fabricated full-visible-spectrum white LEDs by integrating the synthesized single-phase phosphor with a blue LED chip.
The NaLaS2:Bi3+ phosphor exhibited broadband visible emission spanning 500 nm to 750 nm under blue-light excitation.
The integrated white LED achieved a high color rendering index (CRI) of 87.36 across the full visible spectrum.

Implication

Experimental study demonstrates broadband visible emission using a single-phase NaLaS2:Bi3+ phosphor, indicating potential for high-color-rendering white LEDs.

Abstract

We report a blue-light-excitable NaLaS 2 :Bi 3+ phosphor that exhibits broadband visible emission from 500 to 750 nm. Using this single phosphor, full-visible-spectrum WLEDs with a high CRI of 87.36 were obtained when combined with a blue LED chip.

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Cite This Study

Dong et al. (2026) studied this question.

synapsesocial.com/papers/6a7ac20ae357fbdac589a68c https://doi.org/10.1039/d6tc01455k

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Broad visible emission from a blue-light-excitable single-phase NaLaS ₂ :Bi ³⁺ phosphor for high-CRI white LEDs

Key Points

Implication

Abstract

Discussion

Cite This Study

Broad visible emission from a blue-light-excitable single-phase NaLaS ₂ :Bi ³⁺ phosphor for high-CRI white LEDs

Key Points

Implication

Abstract

Discussion

Cite This Study

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