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Related Experiment Video

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Second-level fast sintering enables high-brightness light source for visible light communication.

Guojuan Wang¹, Wei Xiong¹, Linrong Qiu¹

¹Fujian Provincial Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen, China.

Nature Communications

|June 25, 2026

Summary

Researchers developed a new sintering method for phosphor ceramics, significantly improving light conversion efficiency and color quality. This advancement boosts performance for laser-driven light sources used in lighting and communication.

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Area of Science:

Materials Science
Optoelectronics
Ceramic Engineering

Background:

Traditional phosphor ceramics for laser-driven light sources exhibit limitations in efficiency, color rendering, and tunable color temperature.
These limitations hinder the performance of lighting, display, and communication systems.

Purpose of the Study:

To develop an advanced fabrication method for high-performance phosphor ceramics.
To address the shortcomings of conventional phosphor materials for enhanced light source applications.

Main Methods:

Utilized rapid pulsed high-temperature sintering technology to fabricate phosphor ceramics.
Achieved simultaneous dense microstructure and grain refinement.
Developed a Lu₃Al₅O₁₂:Ce-CaAlSiN₃:Eu composite ceramic system.
Established an accurate emission wavelength prediction model.

Main Results:

Achieved a 31% improvement in light conversion efficiency for Lu₃Al₅O₁₂:Ce ceramics.
Demonstrated markedly better color mixing uniformity and 1.5-fold increased fracture toughness.
Observed a 95-fold enhancement in quantum efficiency for composite ceramics.
Produced white light with a color rendering index of 93 and good reliability under blue laser excitation.
Predicted emission wavelengths with <5 nm accuracy from 495 to 605 nm.
Achieved a broad color temperature range (1996–9803 K).

Conclusions:

The rapid pulsed high-temperature sintering method enables the fabrication of advanced phosphor ceramics with superior properties.
The developed composite ceramics and prediction model significantly enhance laser-driven light source performance.
This research paves the way for high-performance lighting and visible light communication systems.