Luminescence of rare earth doped ZnS nanophosphors for the applications in optical displays

Archana, L.S.; Rajendran, Deepthi N.

doi:10.1016/j.matpr.2020.05.227

Cited by 17 publications

(7 citation statements)

References 18 publications

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“…Os materiais luminescentes, também são conhecidos como luminóforos, geralmente fabricados por dois tipos de elementos, como, Sulfeto de Zinco (ZnS) e Aluminato de estrôncio (SrAl), são foco de pesquisas, graças sua ampla aplicabilidade, e podem ser encontrados em telas e displays de aparelhos como televisores e celulares e em sistemas fotovoltaicos 28 .…”

Section: Luminescência Persistenteunclassified

Preparação de vernizes contendo luminóforos para aplicação em sinalização

Clemente,

Rocha,

Gonçalves

et al. 2024

R. G. Secr.

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Esta pesquisa teve como foco principal, o tema material com mecanismo da luminescência persistente, buscando definir qual melhor combinação de verniz ou resina acrílica, e um elemento luminóforo, para a obtenção de material de sinalização de trânsito e de emergência. Todo o interesse no tema atual da pesquisa foi resultado de uma ideia inicialmente sobre a preparação de produtos com mecanismo da luminescência persistente e obtenção de material utilizado em sinalização de em e definir o verniz ou resina acrílica, adequados, para compor um material com luminescência persistente, dopados com luminóforos comerciais, que seja ideal para manter o material luminescente o tempo suficiente para sinalizar situações de alerta de trânsito e emergência. Outro fator definido, foi qual a melhor forma de aplicação do produto para que material atenda adequadamente a funcionalidade desejada, além de fomentar a maior discussão sobre o tema por parte dos cientistas e empresas interessados pelo assunto em questão.

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Section: Luminescência Persistenteunclassified

Preparação de vernizes contendo luminóforos para aplicação em sinalização

Clemente,

Rocha,

Gonçalves

et al. 2024

R. G. Secr.

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“…All the ZnS-HDA capped nanoparticles synthesized at 120 ºC, 160 ºC and 200 ºC mainly exhibited peaks that correspond to (100), ( 002), ( 101), ( 102), ( 110), ( 112) and ( 103) planes that well-matched with the hexagonal phase, which correspond to the lattice constant according to literature (JCPDS card no. 00-001-0792) [20].…”

Section: Optical Properties Of Hda Capped Zns Nanoparticlesmentioning

confidence: 99%

Optimization of Reaction Parameters during the Synthesis of Hexagonal Hexadecylamine Capped ZnS Nanoparticles

JAWORE,

XABA,

NATE

et al. 2023

ajc

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Zinc sulphide nanoparticles capped with hexadecylamine (ZnS-HDA) have been synthesized through thermal decomposition of (Z)-2- (pyrrolidin-2-ylidene)thiourea zinc(II) complex. The effects of temperature, time and concentration of the precursor on the properties of ZnS-HDA capped nanoparticles were investigated. The values of the optical band edges were increasing when the temperature, reaction tim and the amount of the precursor were elevated. X-ray diffraction patterns of all the synthesized nanoparticles mainly exhibited hexagonal phase structures. The morphologies of the particles were increasing with the increase in temperature, time and precursor concentration.

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“…ZnS nanostructures [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. It is reported that the band gap

increases with increasing TM doping concentration (Mn, Co, Ni, Cu, Ag, Cd) in ZnS NPs [ 30 ] and decreases with increasing Sr [ 31 ] or RE [ 34 , 35 ] dopants. It must be noted that there are observed opposite results, for example that

decreases with increasing Mn–, Ni– and Co- doping in ZnS thin films [ 29 ] or with increasing Mn doping in ZnS NPs [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Magnetic, Phonon and Optical Properties of Transition Metal and Rare Earth Ion Doped ZnS Nanoparticles

2022

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The surface, size and ion doping effects on the magnetic, phonon and optical properties of ZnS nanoparticles are studied based on the s-d model including spin-phonon and Coulomb interaction, and using a Green’s function theory. The changes of the properties are explained on a microscopic level, due to the different radii between the doping and host ions, which cause different strains—compressive or tensile, and change the exchange interaction constants in our model. The magnetization increases with increasing small transition metal (TM) and rare earth (RE) doping concentration. For larger TM dopants the magnetization decreases. The phonon energies increase with increasing TM, whereas they decrease by RE ions. The phonon damping increases for all doping ions. The changes of the band gap energy with different ion doping concentration is also studied. Band gap changes in doped semiconductors could be due as a result of exchange, s-d, Coulomb and electron-phonon interactions. We have tried to clarify the discrepancies which are reported in the literature in the magnetization and the band gap energy.

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Luminescence of rare earth doped ZnS nanophosphors for the applications in optical displays

Cited by 17 publications

References 18 publications

Preparação de vernizes contendo luminóforos para aplicação em sinalização

Preparação de vernizes contendo luminóforos para aplicação em sinalização

Optimization of Reaction Parameters during the Synthesis of Hexagonal Hexadecylamine Capped ZnS Nanoparticles

Magnetic, Phonon and Optical Properties of Transition Metal and Rare Earth Ion Doped ZnS Nanoparticles

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