Correlated structural and optical properties of crystal-engineered Eu3+-doped gadolinium oxyfluoride polymorphs compatible for lighting and display applications

Revathy, J.S.; Abraham, Malini; Jagannath, G.; Mohapatra, Sushanta Kumar; Pandey, Mukesh Kumar; Annapurna, K.; Rajendran, Deepthi N.; Das, Subrata

doi:10.1016/j.ceramint.2023.12.019

Cited by 5 publications

(1 citation statement)

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“…S4 †. The values of absorption efficiency and the internal and external quantum efficiency (symbolized as AE, IQE, and EQE, respectively) were calculated using below mentioned equations revealed elsewhere: 37–39 η EQE = η IQY × η AY where ∫ L S means the integrated area under the emission curve. Moreover, ∫ E S and ∫ E R signify the area under the excitation spectra with and without the phosphor in the integrating sphere, respectively.…”

Section: Resultsmentioning

confidence: 99%

A highly efficient deep red-emitting Mn⁴⁺-powered oxyfluoride nanophosphor developed for plant growth and optical thermometric applications

Abraham,

Dhanuka,

Som

et al. 2024

Nanoscale

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Section: Resultsmentioning

confidence: 99%

A highly efficient deep red-emitting Mn⁴⁺-powered oxyfluoride nanophosphor developed for plant growth and optical thermometric applications

Abraham,

Dhanuka,

Som

et al. 2024

Nanoscale

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Strategically Developed Strong Red‐Emitting Oxyfluoride Nanophosphors for Next‐Generation Lighting Applications

Abraham,

Thejas,

Kunti

et al. 2024

Advanced Optical Materials

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Red‐emitting nanophosphors have a multirole in improvising the next‐generation bulk/micro/nano‐level lighting devices, particularly in refining white light quality and device performance. Nonetheless, it is difficult to synthesize nanosized phosphors with good yield and paralleled high absorption efficiency both in UV and blue regions, which is critical for modern lighting. Herein, new Mg14Ge4.99+σO24‐x+δFx: Mn4+ red nanoparticles with sizes below 100 nm are designed to improve not only the luminescence but also the blue light absorption. This approach has validated the applicability of red‐emitting nanophosphors into flexible UV and blue nitride nanowire light‐emitting‐diodes (LEDs), and commercial bulk LEDs, for the first time, with boosted intensity and color superiority for a variety of lighting utilizations. For these phosphor LEDs (pc‐LEDs), optimized red nanophosphor with an external quantum efficiency of ≈44.5%, color purity of ≈100%, and thermal stability of ≈72% at 150 °C is used. The optimized nanophosphor is combined with a flexible UV‐AlGaN/GaN nanowire LED and a blue‐InGaN/GaN‐LED. The resultant devices show promising red electroluminescence without any degradation at elevated currents. Finally, several unfamiliar LED packaging is designed with yellow and red phosphors implemented on 2 sets of double LED units to reach CRI > 85. The re‐premeditated LED packages are useful for high‐definition lighting.

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Preparation of Eu ions doped Sr5(PO4)3F transparent glass ceramics and their luminescence properties

Zhang,

Wu,

Song

et al. 2024

Ceramics International

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Correlated structural and optical properties of crystal-engineered Eu3+-doped gadolinium oxyfluoride polymorphs compatible for lighting and display applications

Cited by 5 publications

References 63 publications

A highly efficient deep red-emitting Mn⁴⁺-powered oxyfluoride nanophosphor developed for plant growth and optical thermometric applications

A highly efficient deep red-emitting Mn⁴⁺-powered oxyfluoride nanophosphor developed for plant growth and optical thermometric applications

Strategically Developed Strong Red‐Emitting Oxyfluoride Nanophosphors for Next‐Generation Lighting Applications

Preparation of Eu ions doped Sr5(PO4)3F transparent glass ceramics and their luminescence properties

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Correlated structural and optical properties of crystal-engineered Eu3+-doped gadolinium oxyfluoride polymorphs compatible for lighting and display applications

Cited by 5 publications

References 63 publications

A highly efficient deep red-emitting Mn4+-powered oxyfluoride nanophosphor developed for plant growth and optical thermometric applications

A highly efficient deep red-emitting Mn4+-powered oxyfluoride nanophosphor developed for plant growth and optical thermometric applications

Strategically Developed Strong Red‐Emitting Oxyfluoride Nanophosphors for Next‐Generation Lighting Applications

Preparation of Eu ions doped Sr5(PO4)3F transparent glass ceramics and their luminescence properties

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A highly efficient deep red-emitting Mn⁴⁺-powered oxyfluoride nanophosphor developed for plant growth and optical thermometric applications

A highly efficient deep red-emitting Mn⁴⁺-powered oxyfluoride nanophosphor developed for plant growth and optical thermometric applications