All-inorganic color converter based on a phosphor in bismuthate glass for white laser diode lighting

Li, Hong; Xu, Ruipeng; Yang, Jie; Xiong, Dehua

doi:10.1039/d3dt03045h

Dalton Trans.

2023

DOI: 10.1039/d3dt03045h

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All-inorganic color converter based on a phosphor in bismuthate glass for white laser diode lighting

Hong Li,

Ruipeng Xu,

Jie Yang

et al.

Abstract: Blue laser diodes (LDs) combined with phosphors have been recognized as next generation solid white lighting technology. The phosphor-in-glass (PiG) coating is used for packaging as an appropriate fluorescent conversion...

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2024

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Cited by 4 publications

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A Novel Sapphire@PiGF@Sapphire Color Converter with High Luminescence Saturation Threshold for Laser Lighting

Zhang,

Zhao,

et al. 2024

Adv Funct Materials

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Next‐generation high‐brightness laser lighting confronts a key challenge in preparing static color‐converting materials with remarkable luminescence saturation. Herein, a novel architecture of transmissive Y3Al5O12: Ce3+ (YAG) phosphor‐in‐glass film (PiGF) with double‐sided sapphires, i.e., a sandwich structured sapphire@PiGF@sapphire (S@PiGF@S) composite, is designed and fabricated by a thermocompression sintering technology. This kind of material can tolerate high laser power density (LPD) for the efficient double‐sided thermal channels and the high‐energy laser spot away from the PiGF emitting layer. As a consequence, the optimized S@PiGF@S color converter yields white light with a high luminous flux (LF) of 7602 lm at a record luminescence saturation threshold of 46.47 W·mm−2 benefiting from its low working temperature of merely 284 °C, which is 6.3 times that of traditional PiGF@sapphire color converter (1205 lm@10.89 W·mm−2). These findings verify that the developed S@PiGF@S color converter enables preferably optical‐thermal performances for promising applications in high‐brightness laser lighting.

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A Novel Sapphire@PiGF@Sapphire Color Converter with High Luminescence Saturation Threshold for Laser Lighting

Zhang,

Zhao,

et al. 2024

Adv Funct Materials

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Laser‐Driven (Ga/Sc)₂O₃:Cr³⁺ Luminescent Ceramics Enabling Near‐Infrared Light Source for Noninvasive Imaging and Detection

Xiong,

Liu,

Chen

et al. 2024

Laser & Photonics Reviews

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High‐power broadband near‐infrared (NIR) light sources have received extensive attention in long‐distance night vision lighting, non‐invasive detection and imaging, and quantitative analysis of organic components. However, developing targeted NIR‐emitting phosphors with high external quantum efficiency (EQE) and thermal stability remains a challenge to raise the NIR output power and expand the applications. Herein, Ga1.98−xScxO3:0.02Cr3+ luminescent ceramics are prepared with redshifted emission peaks from 710 to 820 nm depending on the weakened crystal field. The optimized Ga1.18Sc0.8O3:0.02Cr3+ ceramic exhibits a high EQE of 79.6% and excellent thermal stability (I423 K/I298 K = 72%) under 468 nm excitation, which brings a saturation threshold up to 893 mW@3 W mm−2 under 450 nm laser pumping. The high‐power laser‐driven broadband NIR light source demonstrates potential in non‐invasive detection and quantitative analysis of alcohol concentration. This study opens up new avenues for the exploration of high‐power broadband NIR light sources.

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Bicolor phosphor-in-glass film with highly reflective interface design for high-quality laser-driven white lighting

Zhang,

Yu,

Zhao

et al. 2024

Ceramics International

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All-inorganic color converter based on a phosphor in bismuthate glass for white laser diode lighting

Abstract: Blue laser diodes (LDs) combined with phosphors have been recognized as next generation solid white lighting technology. The phosphor-in-glass (PiG) coating is used for packaging as an appropriate fluorescent conversion...

Cited by 4 publications

References 39 publications

A Novel Sapphire@PiGF@Sapphire Color Converter with High Luminescence Saturation Threshold for Laser Lighting

A Novel Sapphire@PiGF@Sapphire Color Converter with High Luminescence Saturation Threshold for Laser Lighting

Laser‐Driven (Ga/Sc)₂O₃:Cr³⁺ Luminescent Ceramics Enabling Near‐Infrared Light Source for Noninvasive Imaging and Detection

Bicolor phosphor-in-glass film with highly reflective interface design for high-quality laser-driven white lighting

Contact Info

Product

Resources

About

All-inorganic color converter based on a phosphor in bismuthate glass for white laser diode lighting

Abstract: Blue laser diodes (LDs) combined with phosphors have been recognized as next generation solid white lighting technology. The phosphor-in-glass (PiG) coating is used for packaging as an appropriate fluorescent conversion...

Cited by 4 publications

References 39 publications

A Novel Sapphire@PiGF@Sapphire Color Converter with High Luminescence Saturation Threshold for Laser Lighting

A Novel Sapphire@PiGF@Sapphire Color Converter with High Luminescence Saturation Threshold for Laser Lighting

Laser‐Driven (Ga/Sc)2O3:Cr3+ Luminescent Ceramics Enabling Near‐Infrared Light Source for Noninvasive Imaging and Detection

Bicolor phosphor-in-glass film with highly reflective interface design for high-quality laser-driven white lighting

Contact Info

Product

Resources

About

Laser‐Driven (Ga/Sc)₂O₃:Cr³⁺ Luminescent Ceramics Enabling Near‐Infrared Light Source for Noninvasive Imaging and Detection