Spectroscopic Investigation of Sm3+ doped phosphate based glasses for reddish-orange emission

Rasool, Sk. Nayab; Moorthy, L. Rama; Jayasankar, C.K.

doi:10.1016/j.optcom.2013.08.035

Cited by 65 publications

(9 citation statements)

References 33 publications

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“…The magnetic dipole transitions were observed for 4 G 5/2 → 6 H 5/2,7/2 that obeyed selection rules ΔJ=0±1. Solely electric dipole transition was seen for 4 G 5/2 → 6 H 9/2,11/2 [31,32]. Due to high asymmetry the electric dipole transition exhibits higher peak intensity.…”

Section: Uv-visible Spectramentioning

confidence: 91%

Synthesis and photoluminescence properties of Sm³⁺ doped LaOCl phosphor with reddish orange emission and it’s Judd- Ofelt analysis

Yashodha

Dhananjaya

Manjunath

2019

Mater. Res. Express

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Present paper reports the study on luminescence and optical behaviour of samarium doped lanthanum oxychloride (LaOCl:Sm 3+ ) nanophosphor for their potentiality in display devices. The conventional solid state route was employed to synthesize the phosphor La 1-x Sm x OCl (x=0, 0.01, 0.03, 0.05, 0.07 and 0.09). Tetragonal phase of the prepared compound was confirmed by PXRD. An agglomerated and spherical like structure were seen of the samples from FE-SEM analysis. The Wood and Tauc relation was employed to find out band gap energy and is around 4.23 eV. At an excitation wavelength of 408 nm, a high intense peak of emission was observed at 608 nm for transitions ( 4 G 5/2 → 6 H 7/2 ) of Sm 3+ ions in the PL spectra. Colour co-ordinates (X,Y) were used for the analysis of measured photoluminescence spectra. For the optimized concentration of Sm 3+ (La 1-x Sm x OCl with x=0.05), the intensity parameters (Ω 2 , Ω 4 and Ω 6 )were determined. The trend of Ω 6 >Ω 4 >Ω 2 was observed. An emission cross section and Branching ratio are found to be 3.98×10 −22 cm 2 and 59% respectively for 4 G 5/2 → 6 H 7/2 transition that makes it suitable for laser designs and application. The obtained results reveal that the LaOCl phosphor doped with samarium can be used on the screens of optical electronic systems and also is suitable for emission of reddish orange colour.

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Section: Uv-visible Spectramentioning

confidence: 91%

Synthesis and photoluminescence properties of Sm³⁺ doped LaOCl phosphor with reddish orange emission and it’s Judd- Ofelt analysis

Yashodha

Dhananjaya

Manjunath

2019

Mater. Res. Express

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“…2.65 ms (PKAlCaFSm01) [37], 2.80 ms (OFBSm01) [38], 3.75 ms (NZLS05) [39], 0.59 ms TWZSm10 [41], 1.17 ms for GeBiNa-BaGdSm05 [42] and 2.42 ms for PcfBfTiS20 [43] glass.…”

Section: Decay Curve Analysismentioning

confidence: 98%

“…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].…”

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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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“…Due to the partially filled f-f levels, Sm 3+ ions are desirable for research because they can produce an intense luminescence in the reddish orange wavelength. Moreover, due to their extensive range of energy levels, longer meta-stable lifetimes, high photoluminescence intensity level, larger stimulated emission cross-section, and quantum efficiency, Sm 3+ ion-doped systems have been recommended as being especially favourable for active mediums [29][30][31][32][33][34].…”

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confidence: 99%

Investigation of the spectral characteristics of Sm³⁺ ions in lead borosilicate glass for photonic applications

Nallamala,

Shaik,

Baddela

et al. 2023

Luminescence

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Different concentrations of Sm2O3 doped lead borosilicate glasses were synthesized by using the method melt quenching and their characteristics were analyze using X‐ray diffraction (XRD), Fourier transform infrared (FTIR), absorption, emission, and decay curves. From the XRD, it has been confirmed the non‐crystalline nature of titled glasses. The structural groups that were existing in the host glass have been discovered by looking at the FTIR spectrum. The Judd‐Ofelt (JO) intensity parameters and oscillator strengths are derived from the absorption spectra and compared to with various reported systems. The excited luminescent levels of the Sm3+ ion's radiative properties are further computed using the JO intensity parameters. Effective bandwidth, emission cross‐sections (σe), and several lasing properties are assessed from emission spectra and compared to other reported glass system. The decay curves of 4G5/2 level of Sm3+ ion has also been measured and examined. Additionally, the color coordinates of the CIE (Commission International de I'Eclairage) chromaticity were assessed. The titled glasses were suited for visible reddish‐orange luminescence devices based on all obtained parameters.

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Spectroscopic Investigation of Sm3+ doped phosphate based glasses for reddish-orange emission

Cited by 65 publications

References 33 publications

Synthesis and photoluminescence properties of Sm³⁺ doped LaOCl phosphor with reddish orange emission and it’s Judd- Ofelt analysis

Synthesis and photoluminescence properties of Sm³⁺ doped LaOCl phosphor with reddish orange emission and it’s Judd- Ofelt analysis

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

Investigation of the spectral characteristics of Sm³⁺ ions in lead borosilicate glass for photonic applications

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Spectroscopic Investigation of Sm3+ doped phosphate based glasses for reddish-orange emission

Cited by 65 publications

References 33 publications

Synthesis and photoluminescence properties of Sm3+ doped LaOCl phosphor with reddish orange emission and it’s Judd- Ofelt analysis

Synthesis and photoluminescence properties of Sm3+ doped LaOCl phosphor with reddish orange emission and it’s Judd- Ofelt analysis

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

Investigation of the spectral characteristics of Sm3+ ions in lead borosilicate glass for photonic applications

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Synthesis and photoluminescence properties of Sm³⁺ doped LaOCl phosphor with reddish orange emission and it’s Judd- Ofelt analysis

Synthesis and photoluminescence properties of Sm³⁺ doped LaOCl phosphor with reddish orange emission and it’s Judd- Ofelt analysis

Investigation of the spectral characteristics of Sm³⁺ ions in lead borosilicate glass for photonic applications