Spectroscopic studies of Pr3+ doped lithium lead alumino borate glasses for visible reddish orange luminescent device applications

Deopa, Nisha; Rao, A.S.; Mahamuda, Sk.; Gupta, Mohini; Jayasimhadri, M.; Haranath, D.; Prakash, G. Vijaya

doi:10.1016/j.jallcom.2017.03.020

Cited by 108 publications

(17 citation statements)

References 62 publications

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“…The decrease in luminescence intensity is a result of the concentrations quenching for Pr 3+ ions, which is considered to be a common energy loss mechanism for activator ions. The similar phenomena are also observed in other Pr 3+ doping optical materials . Based on the emission spectra, the brief energy level diagram and energy transfer mechanism of Pr + ions in Pr,Gd:SrF 2 transparent ceramics is presented in Figure .…”

Section: Resultssupporting

confidence: 74%

“…The similar phenomena are also observed in other Pr 3+ doping optical materials. 19,33,34 Based on the emission spectra, the brief energy level diagram and energy transfer mechanism of Pr 3+ ions in Pr,Gd:SrF 2 transparent ceramics is presented in Figure 7. As the fabricated ceramic samples are excited by the commercial blue light of 444 nm, Pr 3+ ions in the ground state of 3 H 4 are pumped to 3 P 2 excited level.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis and luminescence characterization of Pr³⁺, Gd³⁺ co‐doped SrF₂ transparent ceramics

Mei

et al. 2019

J Am Ceram Soc

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Pr3+, Gd3+ co‐doped SrF2 transparent ceramic, as the potential material for visible luminescent applications, was prepared by hot‐pressing of precursor nanopowders. The microstructure, phase compositions, and in‐line transmittance, as well as the photoluminescence properties were investigated systematically. Highly optical quality Pr,Gd:SrF2 transparent ceramic with nearly pore‐free microstructure was obtained at 800°C for 1.5 hours. The average in‐line transmittance of the x at.% Pr, 6 at.% Gd:SrF2 (x = 0.2, 0.5, 1.0, 2.0) transparent ceramics reached to 87.3 % in the infrared region. The photoluminescence spectra presented intense visible light emissions under the excitation of 444 nm, the main intrinsic emission bands located at 483 and 605 nm, which were attributed to the transitions of Pr3+: 3P0 → 3H4 and 1D2 → 3H4, respectively. With the co‐doping of Gd3+ ions, the emission intensity of the Pr:SrF2 transparent ceramic was greatly enhanced. All the emission bands of x at.% Pr, 6 at.% Gd:SrF2 transparent ceramics exhibited the highest luminescence intensity with the 1.0 at.% Pr3+ doping concentrations, whereas the lifetimes decreased dramatically with the Pr3+ doping contents increasing from 0.2 to 2.0 at.% due to its intense concentration quenching effect. The 1 at.% Pr, 6 at.% Gd:SrF2 transparent ceramic is a promising material for visible luminescent device applications.

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Section: Resultssupporting

confidence: 74%

Section: Resultsmentioning

confidence: 99%

Synthesis and luminescence characterization of Pr³⁺, Gd³⁺ co‐doped SrF₂ transparent ceramics

Mei

et al. 2019

J Am Ceram Soc

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“…Great attention has been paid to lead borate glasses due to their distinct advantages, including good radiation shielding properties, strong absorption in the UV region, large transmission windows and the relatively large refractive indices compared to pure borate glasses or alkali borate glasses [21,22]. Recent studies indicate that the properties of systems based on PbO-B 2 O 3 containing rare earth ions are significant in the field of solid-state lasers, tri-color LEDs, reflecting windows and optoelectronic devices [23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Lead Borate Glasses and Glass-Ceramics Singly Doped with Dy3+ for White LEDs

Górny¹,

Kuwik²,

Pisarski³

et al. 2020

Materials

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In this paper, some series of lead borate glasses and glass ceramics singly doped with Dy3+ ions were prepared and then studied using spectroscopic techniques. Our research includes mainly studies of the luminescence properties of received materials for white light. The luminescence bands associated with the characteristic 4F9/2→6H15/2 (blue), 4F9/2→6H13/2 (yellow) and 4F9/2→6H11/2 (red) transitions of trivalent dysprosium in lead borate systems are well observed. In particular, the Commission Internationale de I’Eclairage (CIE) chromaticity coordinates (x, y) were calculated in relation to potential applications for white light-emitting diodes (W-LEDs). Their values depend on the relative B2O3/PbO ratios and PbX2 contents (where X = Cl, F, Br) in glass composition. For glass-ceramics, the chromaticity coordinates are changed significantly under different excitation wavelengths.

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“…With features such as excellent thermal stability, low cost, high doping capacity, and uncomplicated manufacturing processes, glasses doped with rare earth ions have become superior to phosphors . The exciting properties of borosilicate glasses, including their high refractive index with low dispersion, high resistance to chemical attack, low thermal expansion, high softening temperature and mechanical strength, have attracted the interest of researchers and have led to the use of these glasses in many industrial applications such as in displays, solar energy technologies, and microelectromechanical (MEM) systems …”

Section: Introductionmentioning

confidence: 99%

Emission analysis of Tb³⁺‐and Sm³⁺‐ion‐doped (Li₂O/Na₂O/K₂O) and (Li₂O + Na₂O/Li₂O + K₂O/K₂O + Na₂O)‐modified borosilicate glasses

et al. 2017

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Four series of borosilicate glasses modified by alkali oxides and doped with Tb and Sm ions were prepared using the conventional melt quenching technique, with the chemical composition 74.5B O + 10SiO + 5MgO + R + 0.5(Tb O /Sm O ) [where R = 10(Li O /Na O/K O) for series A and C, and R = 5(Li O + Na O/Li O + K O/K O + Na O) for series B and D]. The X-ray diffraction (XRD) patterns of all the prepared glasses indicate their amorphous nature. The spectroscopic properties of the prepared glasses were studied by optical absorption analysis, photoluminescence excitation (PLE) and photoluminescence (PL) analysis. A green emission corresponding to the D → F (543 nm) transition of the Tb ions was registered under excitation at 379 nm for series A and B glasses. The emission spectra of the Sm ions with the series C and D glasses showed strong reddish-orange emission at 600 nm ( G → H ) with an excitation wavelength λ = 404 nm ( H → F ). Furthermore, the change in the luminescence intensity with the addition of an alkali oxide and combinations of these alkali oxides to borosilicate glasses doped with Tb and Sm ions was studied to optimize the potential alkali-oxide-modified borosilicate glass.

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Spectroscopic studies of Pr3+ doped lithium lead alumino borate glasses for visible reddish orange luminescent device applications

Cited by 108 publications

References 62 publications

Synthesis and luminescence characterization of Pr³⁺, Gd³⁺ co‐doped SrF₂ transparent ceramics

Synthesis and luminescence characterization of Pr³⁺, Gd³⁺ co‐doped SrF₂ transparent ceramics

Lead Borate Glasses and Glass-Ceramics Singly Doped with Dy3+ for White LEDs

Emission analysis of Tb³⁺‐and Sm³⁺‐ion‐doped (Li₂O/Na₂O/K₂O) and (Li₂O + Na₂O/Li₂O + K₂O/K₂O + Na₂O)‐modified borosilicate glasses

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Spectroscopic studies of Pr3+ doped lithium lead alumino borate glasses for visible reddish orange luminescent device applications

Cited by 108 publications

References 62 publications

Synthesis and luminescence characterization of Pr3+, Gd3+ co‐doped SrF2 transparent ceramics

Synthesis and luminescence characterization of Pr3+, Gd3+ co‐doped SrF2 transparent ceramics

Lead Borate Glasses and Glass-Ceramics Singly Doped with Dy3+ for White LEDs

Emission analysis of Tb3+‐and Sm3+‐ion‐doped (Li2O/Na2O/K2O) and (Li2O + Na2O/Li2O + K2O/K2O + Na2O)‐modified borosilicate glasses

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Synthesis and luminescence characterization of Pr³⁺, Gd³⁺ co‐doped SrF₂ transparent ceramics

Synthesis and luminescence characterization of Pr³⁺, Gd³⁺ co‐doped SrF₂ transparent ceramics

Emission analysis of Tb³⁺‐and Sm³⁺‐ion‐doped (Li₂O/Na₂O/K₂O) and (Li₂O + Na₂O/Li₂O + K₂O/K₂O + Na₂O)‐modified borosilicate glasses