Spectroscopic properties of Sm 3+ doped sodium-tellurite glasses: Judd-Ofelt analysis

Mawlud, Saman Q.; Ameen, Mudhafar M.; Sahar, Md. Rahim; Mahraz, Zahra Ashur Said; Ahmed, K.

doi:10.1016/j.optmat.2017.04.022

Cited by 100 publications

(10 citation statements)

References 37 publications

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“…Nevertheless, the τ exp of the BGBiNYSm 0.5 glass was as high as 1.5 ms and was comparable with 1.87 ms for BSYCaSm03 [20] and 1.94 ms for LiPbFPS05 [34]. Table 4 compares the radiative parameters (A, β R , τ R , σ SE , Δλ eff and σ SE x Δλ eff ) for the 4 G 5/2 state of various Sm 3+ :systems [20, 30–35, 37–39, 41–43].…”

Section: Resultsmentioning

confidence: 95%

“…The JO variables were predicted and tracked the tendency of Ω 6 > Ω 4 > Ω 2 as listed in Table 2 together with other Sm 3+ :glass [20, 29–47]. Among the JO variables, Ω 2 is highly sensitive to the prearrangement of host ions and asymmetric behaviour of the Sm 3+ ions, whereas the variables Ω 4 and Ω 6 can influence the concentration of Sm 3+ ions, index of refractive, glass host and photosensitive properties [56].…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, the ionic state of Sm 3+ ions can be straightforwardly reduced to the Sm 2+ state under a reducing atmosphere [25], ionization [26], or irradiation of ultrafast lasers [27] and spectral hole scorching studies [28]. But, less attention has been paid by researchers to a systematic analysis of heavy metal oxidemodified Sm 3+ -doped borate glass [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47] related to the other Ln 3+ ions because of intense emissions. It is utilized definitely for the combination of other Ln 3+ ions for improving the luminescence quantum efficiency, which is important in the field of optoelectronics [48,49].…”

mentioning

confidence: 99%

“…[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. Among the JO variables, Ω 2 is highly sensitive to the prearrangement of host ions and asymmetric behaviour of the Sm 3+ ions, whereas the variables Ω 4 and Ω 6 can influence the concentration of Sm 3+ ions, index of refractive, glass host and photosensitive properties[56].…”

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confidence: 99%

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Orange‐red luminescence of samarium‐doped bismuth–germanium–borate glass for light‐emitting devices

Netheti¹,

Ravanamma²,

Ravi³

et al. 2023

Luminescence

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Samarium (Sm3+)‐doped glass has sparked a rising interest in demonstrating a noticeable emission in the range of 400–700, which is advantageous in solid‐state lasers in the visible region, colour displays, undersea communication, and optical memory devices. This study reports the fabrication of Sm3+‐doped bismuth–germanium–borate glasses were established using a standard melt‐quenching technique and inspection by absorption, steady‐state luminescence, and transient studies. The typical peaks of Sm3+ ions were detected in the visible range under 403 nm excitation. A strong emission band was detected at 599 nm that resembles the 4G5/2→6H7/2 transition of Sm3+ ions for BGBiNYSm0.5 glass. Furthermore, a reddish‐orange (coral) luminescence at 646 nm that resembles the 4G5/2→6H9/2 transition was also perceived. The stimulated emission cross‐section of 4G5/2 level for BGBiNYSm0.5 glass was 0.39 × 10−22 cm2. Lifetime of the 4G5/2 level was enhanced for the BGBiNYSm0.5 glass and decreased with an increase in active ion concentrations. The lifetime quenching of ions at the metastable state was because of energy transfer among Sm3+ ions by cross‐relaxation channels. Commission Internationale de l'Éclairage (CIE) coordinates were evaluated from the emission spectra. Moreover, all the findings recommend these glass as light‐emitting materials in the coral region at 599 nm for solid‐state lighting applications.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Orange‐red luminescence of samarium‐doped bismuth–germanium–borate glass for light‐emitting devices

Netheti¹,

Ravanamma²,

Ravi³

et al. 2023

Luminescence

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“…Pode-se também observar um aumento da intensidade dos picos ao ligante. A partir dos valores médios de β, o parâmetro de ligação δ pode ser calculado usando a expressão[45,81,82,83]:…”

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Compósitos metal-dielétrico, a partir de vidros óxidos de germânio e telúrio dopados com íons Nd3+ e nanopartículas metálicas para aplicações em amplificadores ópticos que atuem na região infravermelho.

Bordon¹

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Multi‐Color Synaptic Luminescence in RE‐Doped Ca₂SnO₄ (RE = Sm³⁺, Er³⁺, and La³⁺)

Wi,

Lee,

Han

et al. 2024

Adv Funct Materials

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Recently, there has been a surge of interest in neuromorphic computation inspired by the extraordinary characteristics of the human brain, such as low energy consumption, parallelism, adaptivity, cognitive abilities, and learning capabilities. Significant research efforts have focused on exploring optical synaptic behaviors in various functional materials. In this study, the potential of red, green and blue (RGB)‐colored long‐persistent luminescence (LPL) in Sm3+/Er3+/La3+‐doped Ca2SnO4 is investigated for synaptic functionality. The luminescence of the samples is continuously enhanced under serial photoexcitation pulse applications, that is, the potentiation process, which is a key feature demonstrated in biological synapses. In addition, multichannel synaptic functionalities in the full‐color range is successfully demonstrated by integrating individual RGB‐colored Sm3+/Er3+/La3+‐doped Ca2SnO4 into a single quantity. To validate the optical synaptic behavior of the samples in neuromorphic computing applications, a reservoir computing (RC) simulation is performed for space‐time data processing using the unique responses of the samples under 4‐bit excitation pulses. The results demonstrated that the multi‐channel synaptic behaviors in the samples should be more valid for utilization in the RC layer than the single channel of synaptic behavior. We suggest this exploration holds promise for the advancement of synaptic devices employing LPL materials.

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Spectroscopic properties of Sm 3+ doped sodium-tellurite glasses: Judd-Ofelt analysis

Cited by 100 publications

References 37 publications

Orange‐red luminescence of samarium‐doped bismuth–germanium–borate glass for light‐emitting devices

Orange‐red luminescence of samarium‐doped bismuth–germanium–borate glass for light‐emitting devices

Compósitos metal-dielétrico, a partir de vidros óxidos de germânio e telúrio dopados com íons Nd3+ e nanopartículas metálicas para aplicações em amplificadores ópticos que atuem na região infravermelho.

Multi‐Color Synaptic Luminescence in RE‐Doped Ca₂SnO₄ (RE = Sm³⁺, Er³⁺, and La³⁺)

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Spectroscopic properties of Sm 3+ doped sodium-tellurite glasses: Judd-Ofelt analysis

Cited by 100 publications

References 37 publications

Orange‐red luminescence of samarium‐doped bismuth–germanium–borate glass for light‐emitting devices

Orange‐red luminescence of samarium‐doped bismuth–germanium–borate glass for light‐emitting devices

Compósitos metal-dielétrico, a partir de vidros óxidos de germânio e telúrio dopados com íons Nd3+ e nanopartículas metálicas para aplicações em amplificadores ópticos que atuem na região infravermelho.

Multi‐Color Synaptic Luminescence in RE‐Doped Ca2SnO4 (RE = Sm3+, Er3+, and La3+)

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Multi‐Color Synaptic Luminescence in RE‐Doped Ca₂SnO₄ (RE = Sm³⁺, Er³⁺, and La³⁺)