Thermal stability and quantum efficiency improvement of Cr<sup>3+</sup>-activated garnet phosphors <i>via</i> regulating A/B sites for near-infrared LED applications

Ma, Boxin; Xie, Siyuan; Yu, Ting; Zeng, Qingguang; Liu, Xiaoguang; Guo, Yue; Li, Ling; Wen, Dawei

doi:10.1039/d3dt04238c

Dalton Trans.

2024

DOI: 10.1039/d3dt04238c

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Thermal stability and quantum efficiency improvement of Cr³⁺-activated garnet phosphors via regulating A/B sites for near-infrared LED applications

Boxin Ma,

Siyuan Xie,

Ting Yu

et al.

Abstract: The discovery of highly efficient broadband near-infrared emission phosphor is urgent for constructing NIR sources to meet variable applications. Herein, we synthesized series of near-infrared emitting garnet-type (A3B2C3O12) Lu2-xCaAl3.99Cr0.01SiO12: xGd/La...

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Theoretical calculation and luminescence property of Gd-doped Y3Ga5O12:Cr3+ NIR phosphors for plant growth

Zhang,

Liu,

Song

et al. 2024

Inorganic Chemistry Communications

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Theoretical calculation and luminescence property of Gd-doped Y3Ga5O12:Cr3+ NIR phosphors for plant growth

Zhang,

Liu,

Song

et al. 2024

Inorganic Chemistry Communications

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Achieving an Improved NIR Performance of Ca_4–xSc_2xZr_1–xGe₃O₁₂:Cr³⁺ via [Sc³⁺-Sc³⁺]→[Ca²⁺-Zr⁴⁺]

Chen,

Wei,

et al. 2024

Inorg. Chem.

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High-performance near-infrared (NIR) light sources are highly sought after in advanced spectroscopy techniques, driving the development of NIR phosphor-converted light-emitting diodes (pc-LEDs). Escalating the luminescence intensity and thermal stability of NIR-emitting phosphors, which is a core component of NIR pc-LEDs, is of paramount importance. Herein, chemical unit cosubstitution and cosolvent addition tactics were implemented to simultaneously boost the NIR luminescence performance of the synthesized phosphors. The replacement of [Sc 3+ -Sc 3+ ] for [Ca 2+ -Zr 4+ ] in Ca 4 ZrGe 3 O 12 :Cr 3+ likely reduces the antisite defects and offers a more rigid crystal structure. As a result, the emitting intensity is reinforced significantly, along with a remarkable improvement in thermal stability, acquiring 65% of the initial luminescence at 423 K compared with 42% for the primal sample. Moreover, the introduction of H 3 BO 3 further enhances NIR luminescence while maintaining a favorable thermal resistance. The encapsulated NIR pc-LED carries an impressive output power of 71.8 mW at 300 mA and a conversion efficiency up to 15.6% at 10 mA. The practical presentations in food checking, imaging, and detection manifest that Ca 3.5 ScZr 0.5 Ge 3 O 12 :Cr 3+ ,H 3 BO 3 is a promising material for spectroscopy-based technologies.

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Thermal stability and quantum efficiency improvement of Cr³⁺-activated garnet phosphors via regulating A/B sites for near-infrared LED applications

Abstract: The discovery of highly efficient broadband near-infrared emission phosphor is urgent for constructing NIR sources to meet variable applications. Herein, we synthesized series of near-infrared emitting garnet-type (A3B2C3O12) Lu2-xCaAl3.99Cr0.01SiO12: xGd/La...

Cited by 2 publications

References 54 publications

Theoretical calculation and luminescence property of Gd-doped Y3Ga5O12:Cr3+ NIR phosphors for plant growth

Theoretical calculation and luminescence property of Gd-doped Y3Ga5O12:Cr3+ NIR phosphors for plant growth

Achieving an Improved NIR Performance of Ca_4–xSc_2xZr_1–xGe₃O₁₂:Cr³⁺ via [Sc³⁺-Sc³⁺]→[Ca²⁺-Zr⁴⁺]

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Thermal stability and quantum efficiency improvement of Cr3+-activated garnet phosphors via regulating A/B sites for near-infrared LED applications

Abstract: The discovery of highly efficient broadband near-infrared emission phosphor is urgent for constructing NIR sources to meet variable applications. Herein, we synthesized series of near-infrared emitting garnet-type (A3B2C3O12) Lu2-xCaAl3.99Cr0.01SiO12: xGd/La...

Cited by 2 publications

References 54 publications

Theoretical calculation and luminescence property of Gd-doped Y3Ga5O12:Cr3+ NIR phosphors for plant growth

Theoretical calculation and luminescence property of Gd-doped Y3Ga5O12:Cr3+ NIR phosphors for plant growth

Achieving an Improved NIR Performance of Ca4–xSc2xZr1–xGe3O12:Cr3+ via [Sc3+-Sc3+]→[Ca2+-Zr4+]

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Product

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About

Thermal stability and quantum efficiency improvement of Cr³⁺-activated garnet phosphors via regulating A/B sites for near-infrared LED applications

Achieving an Improved NIR Performance of Ca_4–xSc_2xZr_1–xGe₃O₁₂:Cr³⁺ via [Sc³⁺-Sc³⁺]→[Ca²⁺-Zr⁴⁺]