Influence of framework disordering on the luminescence performance of Cr3+-doped near-infrared phosphors: a case study of A3B6O14-type hosts

Feng, Jiahao; Xu, Shaojian; Fu, Ruijing; Guo, Yue; Zeng, Qingguang; Wen, Dawei

doi:10.1039/d3dt02631k

Dalton Trans.

2023

DOI: 10.1039/d3dt02631k

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Influence of framework disordering on the luminescence performance of Cr³⁺-doped near-infrared phosphors: a case study of A₃B₆O₁₄-type hosts

Jiahao Feng,

Shaojian Xu,

Ruijing Fu

et al.

Abstract: Enhancing the degree of framework ordering significantly improves the luminescence efficiency and thermal stability of inorganic near-infrared phosphors.

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2024

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Cited by 3 publications

References 30 publications

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Highly‐Efficiency Far‐Red Emission in Cr³⁺ Activated Ca_1.8Mg_1.2Al₂Ge₃O₁₂ toward Plant Precise Lighting

Yang,

Zheng,

Zou

et al. 2024

Advanced Optical Materials

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Far‐red (FR) region (beyond 700 nm) lighting sources possess special potential for plant lighting. However, it remains a challenge to obtain high‐performance Cr3+‐doped FR phosphors. This study developed a FR phosphor, Ca1.8Mg1.2Al2Ge3O12:Cr3+ (CMAGG: Cr3+), using the cation substitution strategy. Under 438 nm blue light excitation, the phosphors display FR emission centered at 720 nm with a full width at half maximum (FWHM) of 91 nm. Benefit from the favorable match with the FR phytochrome (Pfr), the phosphor is combined with InGaN blue light chips to create a FR phosphor‐converted light‐emitting diode (pc‐LED), which is used in Italian lettuce growth experiments and it results shown in a 15% increase in fresh weight and a 6.5% increase in dry weight. Notably, supplemental FR light modulated its growth morphology. The results of this study will be useful for further research on novel Cr3+‐doped FR phosphors to meet the precise spectral requirements for plant growth.

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Highly‐Efficiency Far‐Red Emission in Cr³⁺ Activated Ca_1.8Mg_1.2Al₂Ge₃O₁₂ toward Plant Precise Lighting

Yang,

Zheng,

Zou

et al. 2024

Advanced Optical Materials

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Broadband NIR‐II Emission Generated by Tetrahedral Cr³⁺/Cr⁴⁺ in SrLaGa₃O₇

Shen,

Li,

Yang

et al. 2024

Laser & Photonics Reviews

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Broadband near‐infrared (NIR) phosphors have garnered significant attention due to their potential applications in phosphor‐concerted NIR light‐emitting diodes (pc‐NIR‐LEDs). Cr3+‐doped NIR phosphors are particularly intriguing because of their broad NIR emission and high efficiency. However, reports on Cr3+‐doped NIR‐II (900–1700 nm) phosphors are scarce. In this study, a novel Cr3+‐doped SrLaGa3O7 NIR‐II phosphor is presented, where the Cr3+ ions are located at tetrahedral sites. The full width at half maximum (FWHM), peak wavelength, internal quantum efficiency (IQE), and thermal activation energy (ΔE) for the synthesized SrLaGa3O7:0.9%Cr3+ phosphor are 194 nm, 1167 nm, 76.12%, and 0.269 eV, respectively. The substitution of Sc3+ for Ga3+ enhances the luminescence performance, and the 0.9%Cr3+/3%Sc3+ co‐doped SrLaGa3O7 phosphor exhibits a peak wavelength of 1208 nm, an IQE of 92.78%, and a ΔE of 0.285 eV. Furthermore, the sintering process in the air induces a transition from Cr3+ to Cr4+, resulting in the formation of SrLaGa3O7:0.9%Cr4+ phosphor, which has a peak wavelength of 1270 nm and an FWHM of 305 nm. The potential application of the 0.9%Cr3+/3%Sc3+ co‐doped SrLaGa3O7 phosphor in pc‐NIR‐LEDs is also evaluated.

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Y3+ doping induced phase segregation and its influence on luminescence of SrLaGa3O7: Mn4+

Du,

Yang,

Shen

et al. 2024

Chemical Physics

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Influence of framework disordering on the luminescence performance of Cr³⁺-doped near-infrared phosphors: a case study of A₃B₆O₁₄-type hosts

Abstract: Enhancing the degree of framework ordering significantly improves the luminescence efficiency and thermal stability of inorganic near-infrared phosphors.

Cited by 3 publications

References 30 publications

Highly‐Efficiency Far‐Red Emission in Cr³⁺ Activated Ca_1.8Mg_1.2Al₂Ge₃O₁₂ toward Plant Precise Lighting

Highly‐Efficiency Far‐Red Emission in Cr³⁺ Activated Ca_1.8Mg_1.2Al₂Ge₃O₁₂ toward Plant Precise Lighting

Broadband NIR‐II Emission Generated by Tetrahedral Cr³⁺/Cr⁴⁺ in SrLaGa₃O₇

Y3+ doping induced phase segregation and its influence on luminescence of SrLaGa3O7: Mn4+

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Influence of framework disordering on the luminescence performance of Cr3+-doped near-infrared phosphors: a case study of A3B6O14-type hosts

Abstract: Enhancing the degree of framework ordering significantly improves the luminescence efficiency and thermal stability of inorganic near-infrared phosphors.

Cited by 3 publications

References 30 publications

Highly‐Efficiency Far‐Red Emission in Cr3+ Activated Ca1.8Mg1.2Al2Ge3O12 toward Plant Precise Lighting

Highly‐Efficiency Far‐Red Emission in Cr3+ Activated Ca1.8Mg1.2Al2Ge3O12 toward Plant Precise Lighting

Broadband NIR‐II Emission Generated by Tetrahedral Cr3+/Cr4+ in SrLaGa3O7

Y3+ doping induced phase segregation and its influence on luminescence of SrLaGa3O7: Mn4+

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Product

Resources

About

Influence of framework disordering on the luminescence performance of Cr³⁺-doped near-infrared phosphors: a case study of A₃B₆O₁₄-type hosts

Highly‐Efficiency Far‐Red Emission in Cr³⁺ Activated Ca_1.8Mg_1.2Al₂Ge₃O₁₂ toward Plant Precise Lighting

Highly‐Efficiency Far‐Red Emission in Cr³⁺ Activated Ca_1.8Mg_1.2Al₂Ge₃O₁₂ toward Plant Precise Lighting

Broadband NIR‐II Emission Generated by Tetrahedral Cr³⁺/Cr⁴⁺ in SrLaGa₃O₇