Judd–Ofelt analysis of spectroscopic properties of Sm3+ ions in K2YF5 crystal

Độ, Phan Văn; Tuyen, Vu Phi; Quang, Vu Xuan; Thanh, Nguyen Huu; Ha, Vu Thi Thai; Хайдуков, Н.М.; Lee, Yong‐Ill; Huy, Bui The

doi:10.1016/j.jallcom.2012.01.037

Cited by 66 publications

(10 citation statements)

References 26 publications

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“…A double exponential function was used to fit the decay curve and fluorescence lifetime was found to be 4.5 ms. This time is in good agreement with the Sm 3 -doped K 2 YF 5 and LiYF 5 crystals [13,27]. Both of these materials had a measured 4 G 5∕2 lifetime of 4.8 ms.…”

Section: Emission and Fluorescence Lifetimesupporting

confidence: 82%

“…Table 3 lists the J-O parameters for BaY 2 F 8 :Sm 3 obtained in this work and compares them with other samarium-doped crystalline fluoride hosts. As referenced in Table 3, only two reports on J-O parameters for Sm 3 in a fluoride host are available in the literature [13,27]. Values calculated for BaY 2 F 8 are comparable and follow the same trend with Ω 4 > Ω 6 > Ω 2 .…”

Section: B Judd-ofelt Analysismentioning

confidence: 68%

“…However, reproducibility of spectroscopic data is difficult in amorphous materials. Fewer investigations have been carried out on Smdoped crystals [13][14][15][16]. Renewed interest in samarium-doped laser materials has centered on randomly oriented crystals and glass hosts [15,17,18].…”

Section: Introductionmentioning

confidence: 99%

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Spectroscopic properties and Judd–Ofelt analysis of BaY_2F_8:Sm^3+

Pugh-Thomas¹

2014

J. Opt. Soc. Am. B

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Optical spectroscopy and Judd-Ofelt analysis were performed on a BaY 2 F 8 :Sm 3 crystal and used to guide the potential application of BaY 2 F 8 :Sm 3 as a laser material. Crystals were characterized by polarized absorption spectroscopy, fluorescence emission, and fluorescence lifetime measurements. The 6 H 9∕2 and 6 H 7∕2 manifolds are of most interest for visible lasers. This investigation seeks to capture the behavior of the samarium ion in a bariumyttrium-fluoride host from the UV-vis into the near-infrared wavelength regions.

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Section: Emission and Fluorescence Lifetimesupporting

confidence: 82%

Section: B Judd-ofelt Analysismentioning

confidence: 68%

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Spectroscopic properties and Judd–Ofelt analysis of BaY_2F_8:Sm^3+

Pugh-Thomas¹

2014

J. Opt. Soc. Am. B

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“…In addition the presence of the Cl −1 ions plays the important role for the reduction of Ω 2 value as the chlorine ions have higher electronegativity (around 3.5) in comparison with the other anion ions, therefore the RE-Cl bonds have the smaller covalency bond than other RE-anion bonds. This is main reason for the reduction of Ω 2 values [37]. In our case since W < W 2 4 we can assume that the field experienced by the Sm 3+ ions in the host matrix (LaOCl) is centrosymmetric in nature.…”

Section: Absorption Spectrum and J-o Analysismentioning

confidence: 92%

“…Various studies have been carried out on Eu 3+ doped phosphors with red emission [17,18] and also Sm 3+ doped phosphors with reddish-orange emission [19][20][21][22]. In this paper, we reported the study of luminescence and Judd-Ofelt analysis of La 1-x Sm x OCl (x=0.00, 0.01, 0.03, 0.05, 0.07, 0.09) Nano phosphor synthesized via solid state which was carried out for short duration and at low temperature.…”

Section: Introductionmentioning

confidence: 99%

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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Analysis of Optical Temperature Sensing Performance of Alkali Metal Doped Na_0.5Gd_0.5TiO₃: Yb, Er Based on Judd‐Ofelt Theory and First Principles Calculations

Yuan,

Wang,

Tang

et al. 2024

Advanced Optical Materials

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In alkali metal‐doped optical temperature measurement materials, the influence of the electronegativity difference of alkali metal ions on optical temperature measurement performance is rarely reported. This study investigates and analyzes the performance of optical temperature measurement of Na0.5Gd0.5TiO3: Yb, Er doped with Li+ and K+ ions, utilizing the Judd‐Ofelt theory and the first‐principles method. The results reveal that the sensitivities increase with the increase of atomic number of doped alkali metal ions. The reason is that a difference in ionic radius between the dopant and the replaced ion decreases the symmetry of the crystal field and increases the value of Ω2. The doping K+ with low electronegativity leads to an increase in the s orbital electron density of rare earth ions, thereby repelling the d orbital electrons, reducing the d electron density, and decreasing the value of Ω6. Based on the Judd‐Ofelt theory, a combination of a large Ω2 and a small Ω6 is expected to enhance the absolute sensitivity of optical temperature‐measuring materials doped with rare earth ions. Therefore, it can be concluded that doping an ion with low electronegativity and a significant radius difference from the substitution site is beneficial for enhancing the optical temperature sensitivity.

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Judd–Ofelt analysis of spectroscopic properties of Sm3+ ions in K2YF5 crystal

Cited by 66 publications

References 26 publications

Spectroscopic properties and Judd–Ofelt analysis of BaY_2F_8:Sm^3+

Spectroscopic properties and Judd–Ofelt analysis of BaY_2F_8:Sm^3+

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

Analysis of Optical Temperature Sensing Performance of Alkali Metal Doped Na_0.5Gd_0.5TiO₃: Yb, Er Based on Judd‐Ofelt Theory and First Principles Calculations

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Judd–Ofelt analysis of spectroscopic properties of Sm3+ ions in K2YF5 crystal

Cited by 66 publications

References 26 publications

Spectroscopic properties and Judd–Ofelt analysis of BaY_2F_8:Sm^3+

Spectroscopic properties and Judd–Ofelt analysis of BaY_2F_8:Sm^3+

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

Analysis of Optical Temperature Sensing Performance of Alkali Metal Doped Na0.5Gd0.5TiO3: Yb, Er Based on Judd‐Ofelt Theory and First Principles Calculations

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

Analysis of Optical Temperature Sensing Performance of Alkali Metal Doped Na_0.5Gd_0.5TiO₃: Yb, Er Based on Judd‐Ofelt Theory and First Principles Calculations