White light emission from a blue polymer light emitting diode combined with <scp>YAG</scp>:<scp>C</scp>e<sup>3+</sup> nanoparticles

Oliva, J.; Rosa, E. De la; Dı́az-Torres, L.A.; Zakhidov, Anvar A.

doi:10.1002/pssa.201330346

Cited by 6 publications

(2 citation statements)

References 29 publications

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“…By increasing the number of the composite sheets up to 4, the white color is reached. The findings are promising and give comparable results to those recently reported in the literature …”

Section: Resultssupporting

confidence: 88%

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Ce:Y₃Al₅O₁₂–Poly(methyl methacrylate) Composite for White-Light-Emitting Diodes

et al. 2014

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A Ce:YAG-poly(methyl methacrylate) (PMMA) composite was prepared by using the melt compounding method. The structure and morphology were investigated by X-ray diffractometry, transmission electron microscopy, and small-angle X-ray scattering. The optical properties (emission, excitation, and fluorescence decay rate) of the composite were studied by using photoluminescence spectroscopy. The polymer−filler interactions were studied using 13 C cross-polarization magic-angle spinning NMR spectroscopy ( 13 C{ 1 H} CP-MAS NMR). The results indicated that Ce:YAG particles are well-dispersed in the PMMA matrix without loss of their luminescence properties or significant spectral shift, thus suggesting that this composite can be valuable for advanced applications in white LED manufacture. A demonstration of its efficiency in white LED devices is also reported.

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“…By increasing the number of the composite sheets up to 4, the white color is reached. The findings are promising and give comparable results to those recently reported in the literature …”

Section: Resultssupporting

confidence: 88%

“…The findings are promising and give comparable results to those recently reported in the literature. 23…”

Section: Resultsmentioning

confidence: 99%

Ce:Y₃Al₅O₁₂–Poly(methyl methacrylate) Composite for White-Light-Emitting Diodes

et al. 2014

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Vacuum‐Boosting Precise Synthetic Control of Highly Bright Solid‐State Carbon Quantum Dots Enables Efficient Light Emitting Diodes

Wang,

Liu,

Wang

et al. 2024

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Carbon quantum dots (C‐dots) have emerged as efficient fluorescent materials for solid‐state lighting devices. However, it is still a challenge to obtain highly bright solid‐state C‐dots because of the aggregation caused quenching. Compared to the encapsulation of as‐prepared C‐dots in matrices, one‐step preparation of C‐dots/matrix complex is a good method to obtain highly bright solid‐state C‐dots, which is still quite limited. Here, an efficient and controllable vacuum‐boosting gradient heating approach is demonstrated for in situ synthesis of a stable and efficient C‐dots/matrix complex. The addition of boric acid strongly bonded with urea, promoting the selectivity of the reaction between citric acid and urea. Benefiting from the high reaction selectivity and spatial‐confinement growth of C‐dots in porous matrices, in situ synthesize C‐dots bonded can synthesized dominantly with a crosslinked octa‐cyclic compound, biuret and cyanuric acid (triuret). The obtained C‐dots/matrix complex exhibited bright green emission with a quantum yield as high as 90% and excellent thermal and photo stability. As a proof‐of‐concept, the as‐prepared C‐dots are used for the fabrication of white light‐emitting diodes (LEDs) with a color rendering index of 84 and luminous efficiency of 88.14 lm W−1, showing great potential for applications in LEDs.

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Multilayer design of hybrid phosphor film for application in LEDs

2016

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blended into the system, the electrostatic interaction of negatively charged YAG:Ce 3þ and positively charged red phosphor particles caused remarkable clustering and heterogeneity in particle dispersion. Consequently, the light is dominantly blue and shifted to cold white. In other case, phosphor particles were sprayed onto the diffused polycarbonate substrate in stacked layers. Coatings with >80% inorganic content by mass with a thickness of 60 mm were subjected to thermal crosslinking, which the presence of the phosphor particles obstructed, presumably due to the hindrance of large phosphor particles in the diffusion of PDMS precursors. The coating of YAG:Ce 3þ first followed by red phosphor in stacked layers produced better light output and color properties than the coating obtained by spraying the mixture at once. Monte Carlo simulation validated the hypothesis.

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White light emission from a blue polymer light emitting diode combined with YAG:Ce³⁺ nanoparticles

Cited by 6 publications

References 29 publications

Ce:Y₃Al₅O₁₂–Poly(methyl methacrylate) Composite for White-Light-Emitting Diodes

Ce:Y₃Al₅O₁₂–Poly(methyl methacrylate) Composite for White-Light-Emitting Diodes

Vacuum‐Boosting Precise Synthetic Control of Highly Bright Solid‐State Carbon Quantum Dots Enables Efficient Light Emitting Diodes

Multilayer design of hybrid phosphor film for application in LEDs

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White light emission from a blue polymer light emitting diode combined with YAG:Ce3+ nanoparticles

Cited by 6 publications

References 29 publications

Ce:Y3Al5O12–Poly(methyl methacrylate) Composite for White-Light-Emitting Diodes

Ce:Y3Al5O12–Poly(methyl methacrylate) Composite for White-Light-Emitting Diodes

Vacuum‐Boosting Precise Synthetic Control of Highly Bright Solid‐State Carbon Quantum Dots Enables Efficient Light Emitting Diodes

Multilayer design of hybrid phosphor film for application in LEDs

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Product

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White light emission from a blue polymer light emitting diode combined with YAG:Ce³⁺ nanoparticles

Ce:Y₃Al₅O₁₂–Poly(methyl methacrylate) Composite for White-Light-Emitting Diodes

Ce:Y₃Al₅O₁₂–Poly(methyl methacrylate) Composite for White-Light-Emitting Diodes