Volume 19, Issue 12 2500165
Research Article

Near-Unity and Near-Zero-Thermal-Quenching Luminescent GAGG–Al2O3:Cr3+ Ceramic via Containerless Solidification and Glass Crystallization Methods for NIR Spectroscopy Application

Yuhao Xiao

Yuhao Xiao

College of Rare Earths, Jiangxi University of Science and Technology, Ganzhou, 341000 China

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Lei Han

Corresponding Author

Lei Han

College of Rare Earths, Jiangxi University of Science and Technology, Ganzhou, 341000 China

Guorui Kechuang Rare Earth Functional Materials (Ganzhou) Co., Ltd (National Rare Earth Functional Materials Innovation Center), Ganzhou, 341100 China

E-mail: [email protected]; [email protected]; [email protected][email protected]

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Zongliang Xiao

Zongliang Xiao

School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000 China

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Jun Song

Jun Song

College of Energy Engineering, Henan Key Laboratory of Smart Lighting, Huanghuai University, Zhumadian, 463000 China

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Tingting Li

Tingting Li

Institute of Technology, Xingtai Open University, Xingtai, 054000 China

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Jianlei Liu

Jianlei Liu

School of Chemistry and Environmental Science, Shangrao Normal University, Shangrao, 334001 China

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Taoyong Liu

Taoyong Liu

College of Urban and Rural Construction, Shaoyang University, Shaoyang, 422100 China

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Decai Huang

Decai Huang

College of Rare Earths, Jiangxi University of Science and Technology, Ganzhou, 341000 China

Guorui Kechuang Rare Earth Functional Materials (Ganzhou) Co., Ltd (National Rare Earth Functional Materials Innovation Center), Ganzhou, 341100 China

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Weixiong You

Weixiong You

Institute of Technology, Xingtai Open University, Xingtai, 054000 China

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Xiuxun Han

Corresponding Author

Xiuxun Han

Guorui Kechuang Rare Earth Functional Materials (Ganzhou) Co., Ltd (National Rare Earth Functional Materials Innovation Center), Ganzhou, 341100 China

School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000 China

E-mail: [email protected]; [email protected]; [email protected][email protected]

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Xinyuan Sun

Corresponding Author

Xinyuan Sun

Department of Physics, Jinggangshan University, Ji'an, 343009 China

E-mail: [email protected]; [email protected]; [email protected][email protected]

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Xinyu Ye

Corresponding Author

Xinyu Ye

College of Rare Earths, Jiangxi University of Science and Technology, Ganzhou, 341000 China

Guorui Kechuang Rare Earth Functional Materials (Ganzhou) Co., Ltd (National Rare Earth Functional Materials Innovation Center), Ganzhou, 341100 China

E-mail: [email protected]; [email protected]; [email protected][email protected]

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First published: 18 March 2025
Citations: 6

Abstract

Near-infrared (NIR) light is widely used in real-time testing fields such as organic component detection and biological imaging owing to its strong tissue penetration and nondestructive properties. However, the performance of NIR phosphor-converted light-emitting diodes (pc-LEDs) is constrained by limitations in efficiency and output power. In this work, the Gd3Al3Ga2O12 (GAGG)–Al2O3:Cr3+ ceramics are successfully synthesized via containerless solidification and glass crystallization methods. The Al2O3 matrix functions as an optically active component akin to GAGG, mitigating concentration quenching effects while preserving strong light absorption. Under 450 nm light excitation, the ceramic exhibits intense NIR luminescence, achieving exceptional internal/external quantum efficiencies (IQE/EQE = 96.8%/46.1%) and remarkable thermal stability (94.3%@150 °C). The ceramic-converted NIR LED (cc-LED) demonstrates outstanding photoelectric conversion efficiency (28%@350 mA) and robust NIR light output (236 mW@350 mA). Additionally, the laser diode (LD)-excited NIR device achieves an exceptional watt-level light output (1.52 W@10 W mm−2). As a proof of concept, this NIR light source shows immense potential for diverse applications including plant illumination, nondestructive testing, and bioimaging systems. Therefore, this innovative GAGG–Al2O3:Cr3+ NIR-LED&LD not only broadens the practical application scope of NIR light sources but also offers a transformative pathway for next-generation compact high-power devices in this field.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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