Phosphor-converted LEDs

Nair, Govind B.; Dhoble, S.J.

doi:10.1016/b978-0-12-819605-2.00004-5

Cited by 9 publications

(2 citation statements)

References 221 publications

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“…These impurities absorb the excitation energy and then transfer it to the activators. These second-doped ions are usually referred to as sensitizers. − …”

Section: Introductionmentioning

confidence: 99%

Comprehensive Review on Downconversion/Downshifting Silicate-Based Phosphors for Solar Cell Applications

Mayavan

2024

ACS Omega

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Insufficient utilization of the solar spectrum in commonly employed solar cells, stemming from a spectral mismatch between the solar spectrum and the solar cell’s band gap, poses a barrier to enhancing solar cell efficiency. To overcome this challenge, downconverting silicate phosphors are employed in solar cells to capture the infrared spectrum of sunlight, thereby augmenting solar cell efficiency. Downconversion/downshifting involves in converting high-energy photons into one or two near-infrared (NIR) photons. Remarkably, silicate-based downconverting phosphors enhance solar cell sensitization, light scattering, antireflectivity, and stability. This review delves into the various energy transfer mechanisms utilized in silicate phosphors. The key aspects covered in this review encompass the development of silicate phosphors that emit NIR light and their synthesis process. The working principle of the solar cell and its parameters are discussed. The impacts of silicate phosphor size, coverage, volume concentration, and arrangement on solar cell performance are also explored. Furthermore, the study addresses several intriguing approaches for developing innovative silicate phosphors to enhance solar cell performance.

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“…These impurities absorb the excitation energy and then transfer it to the activators. These second-doped ions are usually referred to as sensitizers. − …”

Section: Introductionmentioning

confidence: 99%

Comprehensive Review on Downconversion/Downshifting Silicate-Based Phosphors for Solar Cell Applications

Mayavan

2024

ACS Omega

View full text Add to dashboard Cite

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“…Además de la composición, se han investigado distintas estructuras de materiales para fósforos, sobresaliendo los vidrios, cristales, películas, polímeros y nanopartículas [47]. Estos diferentes tipos de materiales se obtienen por diferentes procesos de síntesis, entre estas técnicas se encuentran: A pesar de que el método de melt-quenching ya no es el único disponible para la fabricación de vidrios dopados, sigue siendo una técnica valiosa con potencial todavía por explorar [48].…”

Section: Matricesunclassified

Fósforos de fosfato de litio-aluminio-zinc activados con Dy³⁺/Sm³⁺/Eu³⁺

Sandoval

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Polyoxometalates for carbon dioxide activation: Current progress and perspective

Ahsan,

Saeed,

Ahmad

et al. 2024

J Chinese Chemical Soc

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The elevated level of carbon dioxide (CO2) in the troposphere is playing a crucial role in changing the earth's climatic system. Excess CO2 concentration is trapping a substantial proportion of heat imparting adverse range of environmental effects like extreme weather events, agricultural impacts and disruption of the ecosystem. Strategies such as CO2 capturing and storage are being pursued using polyoxometalates (POMs) to mitigate the elevated level of CO2 and their efficient conversion into useful chemicals. This review outlines the importance of CO2 reduction by electrocatalytic and photocatalytic reduction of CO2. POMs have several advantages for CO2 activation because of their promising catalytic activity, high selectivity and versatility for incorporating different metal ions and ligands. The efficient redox active metal center facilitates the conversion of CO2 by providing sufficient activation energy. Their robust structure also enables them resist harsh conditions, including high temperature and acidic or basic conditions. Owing to these properties, POMs can be a catalyst, co‐catalyst, photosensitizer or multielectron donor for CO2 reduction. Finally, we stated the challenges and future insight for CO2 activation using POMs.

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Phosphor-converted LEDs

Cited by 9 publications

References 221 publications

Comprehensive Review on Downconversion/Downshifting Silicate-Based Phosphors for Solar Cell Applications

Comprehensive Review on Downconversion/Downshifting Silicate-Based Phosphors for Solar Cell Applications

Fósforos de fosfato de litio-aluminio-zinc activados con Dy³⁺/Sm³⁺/Eu³⁺

Polyoxometalates for carbon dioxide activation: Current progress and perspective

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