Optical Investigation of Erbium Doped Lead Tellurite Glass: Judd-Ofelt Analysis

Sazali, E.S.; Sahar, Md. Rahim; Rohani, Md. Supar

doi:10.1016/j.matpr.2015.11.029

Cited by 10 publications

(6 citation statements)

References 11 publications

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“…4). Short lifetimes obtained in this calculation are comparable to that reported in other papers [17,20]. This result may lead to quick electronic decaying to 4 I 13/2 for further radiative decaying to 4 I 15/2 resulting in emission at around 1500 nm.…”

Section: Resultssupporting

confidence: 87%

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Absorption Spectra Analysis of Er3+-Doped TeO2-ZnO-Bi2O3 Glasses

Marzuki

Yunianto

Riyatun

et al. 2018

KEM

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Absorption spectra of different composition of tellurite glasses were analyzed in order to estimate their lasing properties. Composition of the investigated tellurite glasses are: 55TeO2-(43-x)ZnO-2Bi2O3-xEr2O3(x = 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 mol%). Glasses absorption spectra and density were measured at room temperature using UV-VIS-NIR Spectrophotometer and pycnometer, respectively; while their refractive index were measured by implying Brewster’s angle method. Lasing performance of glasses were then analyzed using Judd-Ofelt theory in order to obtain line strength (S), Judd-Ofelt parameters (Ωt, t = 1, 2, 3), and radiative life-times (τ). It is seen that incorporating Er3+ions of up to 2.5 mol% resulted in decreasing the radiative lifetime of electrons sitting at4I11/2. From Judd-Ofelt parameters analysis it can be concluded that these tellurite glasses tend to have the covalence nature of Er-O bond and thus represents the asymmetry around the Er3+ions site.

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Section: Resultssupporting

confidence: 87%

“…1 (a). Typical observed absorption bands are similar to those obtained in literatures [15][16][17]. In our experiment, due to limitation of our UV-VIS-NIR spectrophotometer, absorption spectra are recorded to the maximum wavelength of 1000 nm.…”

Section: Resultssupporting

confidence: 85%

Absorption Spectra Analysis of Er3+-Doped TeO2-ZnO-Bi2O3 Glasses

Marzuki

Yunianto

Riyatun

et al. 2018

KEM

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“…Urbach energy (E u ) or band tail is found from the inverse of the slope of the plot of the natural logarithm of the absorption coe cient α(ω) as a function of photon energy (ħω). The Urbach energy is a characteristic of disordered amorphous materials (Sazali, 2015). It can be seen that the curve has a linear portion close to the edge of the fundamental band.…”

Section: Energy Band Gap and Urbach Energymentioning

confidence: 96%

Spectroscopic and Surface Wetting Properties of Samarium Doped Lead-Tellurite Glass Embedded with Titanium Nanoparticles: Self-Cleaning Glass

Hamad,

Mawlud

2023

Plasmonics

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Two series of samarium doped lead-tellurite glass embedded with titanium nanoparticles (Ti NPs) of different compositions (60-x) TeO 2 -30PbO-10ZnO-xSm 2 O 3 (x = 0.5, 1, 1.5, 2, 2.5 mol%) and (58.5-x) TeO 2 -30PbO-10ZnO-1.5Sm 2 O 3 -xTiO 2 (x = 0.3, 0.6, 0.9, 1.2, 1.5mol %) were prepared using conventional melt quenching technique. The existence of a broad hump XRD pattern veri es the amorphous nature of glasses. The homogeneous distribution and growth of spherical and non-spherical Ti NPs (average diameter ~11.11±0.13 nm) in the glassy matrix are evidenced from the TEM analyses. The HRTEM con rmed the presence of Ti NPs by measuring the lattice spacing of Ti NPs, which is found to be 0.211nm. The UV-Vis-NIR absorption spectra reveal nine bands corresponding to the transition from ground state 6 H 5/2 to excited states 4 I 13/2, 4 I 11/2 , 6 F 11/2 , 6 F 9/2 , 6 F 7/2 , 6 F 5/2 , 6 F 3/2 , 6 H 15/2 , and 6 F 1 /2 , the most intense hypersensitive bands are F 9/2 , 6 F 7/2 , 6 F 5/2 and 6 F 3/2 . The down conversion corresponding to Sm 3+ ions transitions under 404 nm excitation reveals four emission bands centered at 548nm, 583nm, 628nm, and 692 nm related to the transitions

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“…Table 3 records the parameters gained from the Judd-Ofelt theory, including Ω 2 , Ω 4 and Ω 6 . Ω 2 is linked to the host-glass dispute, although Ω 6 decreases as the covalence quality of the Dy-O bonds improves [37]. A distinctive merit of the Ω 2 parameter is linked to the non-symmetry of the framework coordinates.…”

Section: Judd-ofelt Analysis Of Dy 3+ Intensitymentioning

confidence: 99%

“…A distinctive merit of the Ω 2 parameter is linked to the non-symmetry of the framework coordinates. The ligand polarizability of the molecules or ions, as well as the quality of bonding, is sensitive to the local circumference of the RE ions [37,38]. The other two Judd-Ofelt theoretical parameters, Ω 4 and Ω 6 , include qualities such as the viscosity and hardness of the glass framework and dielectric media that inspire bonding between ligand atoms, as well as dysprosium ions [39,40].…”

Section: Judd-ofelt Analysis Of Dy 3+ Intensitymentioning

confidence: 99%

Prediction of the Judd–Ofelt Parameters of Dy3+-Doped Lead Borosilicate Using Artificial Neural Network

et al. 2022

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Developments in the field of glass research necessitate the mimicking of the optical properties of glass materials before melting the raw materials, as they are very expensive nowadays. An artificial neural network (ANN) was utilized during this work to train and predict the Judd–Ofelt parameters of various glasses, such as Ω2, Ω4 and Ω6, and the radiative lifetimes of many different types of rare-earth-doped glasses. The optimized ANN architecture for forecasting the Judd–Ofelt parameters were found to be very near to the experimentally measured parameters. Then, the conferred ANN model was employed to predict the Judd–Ofelt parameters of some newly prepared borosilicate glasses. Therein, a new glass system of 0.25 PbO–0.2 SiO2–(0.55-x) B2O3–x Dy2O3, was prepared in order to employ the melt-quenching technique. The parameter results of the Judd–Ofelt theory, as well as the Ω2, Ω4 and Ω6 and radiative lifetimes showed that the supplementation of Dy2O3 switched the BO4 units to BO3 units with oxygens that were non-bridging atoms, thus weakening the glass frameworks. Therefore, it is very important to use an ANN to predict the Judd–Ofelt parameters of several rare-earth-doped glasses as luminescent materials.

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Optical Investigation of Erbium Doped Lead Tellurite Glass: Judd-Ofelt Analysis

Cited by 10 publications

References 11 publications

Absorption Spectra Analysis of Er<sup>3+</sup>-Doped TeO<sub>2</sub>-ZnO-Bi<sub>2</sub>O<sub>3</sub> Glasses

Absorption Spectra Analysis of Er<sup>3+</sup>-Doped TeO<sub>2</sub>-ZnO-Bi<sub>2</sub>O<sub>3</sub> Glasses

Spectroscopic and Surface Wetting Properties of Samarium Doped Lead-Tellurite Glass Embedded with Titanium Nanoparticles: Self-Cleaning Glass

Prediction of the Judd–Ofelt Parameters of Dy3+-Doped Lead Borosilicate Using Artificial Neural Network

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