Doped Borotellurite Glasses Research Articles

Raman, Judd-Ofelt and Photoluminescence Analysis of Ho3+/Yb3+-Doped Borotellurite Glasses for Potential Laser Applications

In this study, glasses with the composition (79-x) B2O3-xTeO2-20Li2O-0.5Ho2O3-0.5Yb2O3 (x = 0 - 50mol%) were synthesized using the melt-quenching method to explore the spectroscopic effect of TeO2 and B2O3 as mixed glass formers. Raman spectroscopy indicated that increasing TeO2 content leads to depolymerization, characterized by a reduction in the relative area of TeO4 units. Absorption spectra revealed nine peaks related to transitions from 5I8 ground state to various excited states of Ho3+ ions, and one peak for the transition from the 2F7/2 ground state of Yb3+ ions. A negative bonding parameter suggests that there is primarily ionic interaction among Ho3+ and its ligands. However, the increase of Ω2 suggests that Ho3+ ions have relatively higher covalence and strong ligand polarizability, except at x = 40mol% due to the rivalry among TeO2 and B2O3. Decrease in Ω4 and Ω6 reflect reduced glass rigidity due to increased NBO content, weakening the glass structure. Luminescence spectra showed green (526nm) and red (642nm) emissions from Ho3+ transitions of 5F4 → 5I8 and 5F5 → 5I8. Intriguingly, a novel peak at 738nm associated with the 5F4 → 5I7 transition in Ho3+ ions, linked to energy transfer from Yb3+ to Ho3+. The stimulated emission cross section for the green and red emission were (0.324 – 0.347) × 10-20 cm2 and (0.387 – 0.423) × 10-20 cm2 respectively. These glasses demonstrate potential for advanced laser, green display, and photonic technology applications.

Spectral, Thermal and Upconversion Properties of Dy3+ Doped Borotellurite Glasses with Large Stability Parameter

Glass sample of yttrium zinc lithium lead sodium alumino borotellurite (25-x) TeO2:10ZnO:10Li2O:10PbO:10Na2O:10Al2O3:10Y2O3:15B2O3:xDy2O3. (wherex=1,1.5 and 2 mol%) have been prepared by melt-quenching technique. The amorphous nature of the prepared glass samples was confirmed by X-ray diffraction. Optical absorption, excitation spectrum and fluorescence spectra were recorded at room temperature for all glass samples. Judd-Ofelt intensity parameters Ωλ (λ=2, 4 and 6) are evaluated from the intensities of various absorption bands of optical absorption spectra. Using these intensity parameters various radiative properties like spontaneous emission probability, branching ratio, radiative life time and stimulated emission cross–section of various emission lines have been evaluated

Tailoring structural, thermal, and optical properties of Tm3+-doped borotellurite glasses through Bi2O3 incorporation for optical fiber construction

This research investigates the influence of bismuth oxide (Bi2O3) on the structural, thermal, and optical properties of thulium (Tm3+) ion-doped borotellurite glasses, aiming to optimize materials for optical fiber construction. Melt-quench method was employed for glass preparation. XRD spectra indicated that all the synthesized glass samples exhibit an amorphous structure. By methodically increasing the Bi2O3 content to 0.1 molar fraction, significant improvements were observed in the glass matrix. These improvements include increased optical band gaps and decreased Urbach energy, indicative of reduced structural disorder and enhanced homogeneity. which are crucial for minimizing optical losses in fiber optics. Infrared (IR) spectroscopy analysis revealed that this optimal Bi2O3 content leads to denser, more ordered glass structures with an increase in bridging oxygens and a reduction in non-bridging oxygens, contributing directly to the observed improvements in optical properties. Additionally, thermal analysis highlighted a notable enhancement in the thermal stability of the glasses, highlighting their suitability for enduring variable temperature conditions and ensuring durability in optical fiber infrastructure. The findings support for the potential of these doped borotellurite glasses in advancing the development of robust, high-performance optical fibers capable of withstanding environmental challenges.

Impacts of manganese oxide nanoparticles on the magnetic behaviour of Eu3+ doped borotellurite glasses

This study investigates the effect of manganese oxide nanoparticles (Mn3O4 NPs) concentration on the magnetic properties of borotellurite (BT) glass. Manganese oxide (Mn3O4) is a transition metal nanoparticle that favoured due to high magnetic and surface plasmon resonance (SPR) attributes. A series of Mn3O4 NPs embedded Eu3+ doped BT glasses are prepared using melt quenching technique. The impacts of Mn3O4 NPs on the magnetic behaviours of BT glass are examined. XRD patterns verified the glass’s amorphous nature. The high spin of Mn2+ in octahedral and tetrahedral coordination, respectively, is attributable to two prominent values of the g factor between 4.39 to 4.45 and 1.80 to 1.98 in the Electron Spin Resonance (ESR) measurement. Additionally, it reveals the existence of asymmetries in the sites of the Mn2+ centres and that covalent bonds predominate. The fabrication of BT glass stimulated by the concentration of Mn3O4 NPs may contribute towards the development applications especially in nonlinear optical fields.

Investigation of optical, mechanical, and shielding properties of zirconia glass capsule

Five new developed ZrO2 doped borotellurite glass with nominal composition of 60B2O3 -10Na2O-(10-x) CaO–20TeO2 -xZrO2 (x = 0, 0.5, 1.0, 2.0, and 3.0 mol.%), were prepared by melt-quenching process. Their amorphous nature, surface properties, and element distribution were investigated. Optical measurements from ultraviolet–visible (UV–Vis/NIR) spectrophotometer reveal that increasing the ZrO2 content leads to a decrease in both the indirect optical bandgap and Urbach energy, and to an increase in the indirect refractive index. Makishima_Mackenzie's approach was employed to calculate theoretical elastic moduli where Vickers microhardness was measured experimentally. It was shown that increasing the content of ZrO2 enhanced the microhardness and elastic characteristics. Gamma shielding characteristics were estimated using Phy-X/PSD software. Regarding radiation shielding performance, samples with higher zirconia content have higher radiation absorption ability. These results suggest that doping borotellurite glass with ZrO2 would improve glass properties to be a good candidate for optoelectronic applications, fiber optics, and/or gamma radiation shielding capsule.

Exploration of modifier based structural and spectroscopic traits of Eu3+ doped boro-tellurite glasses for solar UV photons converting applications

A new series of stable host glass with different modifier cations have been formed with the molar composition15XO + 39B2O3 + 25TeO2 + 10Na2O + 10K2O + 1Eu2O3 (X = Li2, Ca, Sr, Ba, Zn) through traditional glass preparation technique of melt quenching. The effect caused by the incorporation of modifier cations on the radiative assets of Eu3+ ions in the present host glass were inspected through X-ray Diffraction (XRD), Fourier Transformed Infra-Red (FTIR), UV–vis-NIR, photoluminescence and luminescence decay spectral studies at room temperature. The broad diffraction band in the XRD pattern confirms glassy or amorphous nature of the synthesized samples. The functional modes of vibration and structural modules in the prepared glass samples were inspected through FTIR spectra. The 4f − 4f electronic transitions pertaining to the trivalent europium (Eu3+) ions in the new host glasses were scrutinized by UV–vis-NIR absorption studies where in the dominant covalent bonding nature of the Eu3+ ions with its nearby ligands have been confirmed via average nephelauxetic ratio (β) and bonding parameter(δ) values. Optical bandgap (indirect and direct) values were testified to identify the photon energy transparent window and to explore the tendency of the formation of non-bridging oxygens. Luminescence ability of the prepared samples was inspected by exciting at a wavelength of 465 nm. Among the prepared samples, Eu3+ ions emissions were observed and the highest intensity of emission occurred at 612 nm (5D0→7F2) for BTLi:Eu glass. The Judd-Ofelt parameters were estimated and used to evaluate the radiative parameters such as radiative lifetime (τrad), transition probability (A), branching ratio (βR), stimulated emission cross-section (σPE) of all the emissions observed in the produced glasses and the outcomes were equated with the related literature. The colour chromaticity coordinates and colour correlated temperature (CCT) were explored from the emission spectra using CIE 1931 diagram and the CCT values found to lie in the range of 2000–4000 K. The luminescence decay comfortably fitted to the single exponential decay profile which further confirms the non-appearance of energy transfer via mutual interaction amongst Eu3+ ions in all the present glasses. All the observed results indicate the fact that the incorporation of Li+ cations induces more attractive radiative features with 77 % of UV to visible quantum converting efficiency than all other cations used in this contemporary study and among the prepared glasses, BTLi:Eu glass exhibits a better capability in red light emitting electro-optical applications.

Fluorescence features of Tm3+-doped multicomponent borosilicate and borotellurite glasses for blue laser and S-band optical amplifier applications

Novel B2O3–SiO2–Al2O3–ZnO–Li2O/MgO and B2O3–TeO2–PbO–ZnO–Li2O–Na2O glasses with different concentrations of Tm2O3 were synthesized by using the melt-quench method. All the fabricated samples have been characterized by visible emission spectra and decay times, including near-infrared (NIR) luminescence measurements. For 0.5 mol% Tm3+-doped borotellurite glass, several radiative parameters are evaluated using the Judd-Ofelt parameters. The intensity of all the visible emission bands increased with the increase of Tm2O3 concentration up to 0.5 mol%, and beyond this doping content, luminescence concentration quenching takes place. The luminescence intensity quenching is attributed to energy transfer (ET) processes through cross-relaxation (CR) channels. The visible luminescence decay curves were well fit with a single exponential (for Tm3+: 1D2 level) and double exponential (for Tm3+: 1G4 level) functions for the multicomponent borosilicate samples, while Inokuti-Hirayama model was used for the multicomponent borotellurite glass 1D2 level decay time fit. The derived decay lifetimes of the 1D2 level are found to be much shorter than that of the 1G4 level. In Li2O (alkali) or MgO (alkaline) containing borosilicate samples, pumped under 808 nm laser diode, the 3H4→3F4 (1.458 μm) emission intensity increased from 0.1 to 2.0 mol% Tm3+ ion concentration, indicating negligible CR processes. The computed Full-Width at Half-Maximum (FWHM) values for the 1458 nm emission in 2.0 mol% Tm3+-doped Li and Mg series borosilicate samples are 117 and 125 nm, respectively, while the FWHM value for 0.5 mol% Tm2O3 content doped borotellurite glass is 118 nm. Following the analyzed visible and NIR optical results, the fabricated Tm3+ glasses could be useful for blue laser and S-band optical amplifier applications.

Electronic polarizability and third-order nonlinearity of Nd3+ doped borotellurite glass for potential optical fiber

The glass series with composition of {[(TeO2)0.70 (B2O3)0.30]0.7 (ZnO)0.3}1-y (Nd2O3)y where, y = 0.005, 0.01, 0.02, 0.03, 0.04 and 0.05; was fabricated via melt-quenched technique. The third-order optical nonlinearity was observed by using Z-scan technique. Polarizability and third-order nonlinearity of borotellurite glass doped with neodymium (Nd3+) will be reported. This work presents the effect of neodymium ions on the linear and nonlinear optical performance of borotellurite glass for potential photonics applications. The structure and optical performance of the resulting transparent neodymium doped borotellurite glass are characterized. The reduction of optical band gap energy, Eg is observed which shows the alteration of tellurite structure by the Nd3+. The values of electronic polarizability are enhanced with an increase of Nd3+ ions. The enhancement of electronic polarizability provides an excellent medium for nonlinear optical applications. The optical basicity of the investigated materials shows non-linear trend along with Nd3+ ions concentration. The Z-scan data for third-order optical nonlinearities suggest that the glass materials are excellent to be used as a medium in nonlinear optical fiber. Therefore, the investigated glass materials may provide a good material for photonic applications.

Effect of annealing on the optical and magnetic properties of Mn3O4 nanoparticles embedded into Eu3+ doped borotellurite glasses

Tuning the enhanced optical and magnetic properties of rare earth doped glasses by embedding nanoparticles is a never-ending quest. Influences of heat treatment (annealing) in modifying the spectral features of melt-quench synthesized manganese oxide nanoparticles (Mn3O4 NPs) embedded Eu3+-doped borotellurite glasses are reported. The growth of NPs is tuned by varying the annealing time. TEM micrograph reveals the nucleation of heat treated Mn3O4 NPs and SAED manifest their growth along the (1 1 2) crystallographic planes having average size in the range of 5.2 to 21.4 nm. The SPR bands are evidenced in the range 350 to 700 nm that validates the growth of Mn3O4 NPs in the glass matrix. The luminescence spectra reveal four major emission peaks at 591, 614, 651 and 700 nm originating from 7F1, 7F27F3, and 7F4 transitions levels, respectively. Intensity enhancement displayed by heat treated glass samples is attributed to the local field effect of Mn3O4 NPs while a quenching is due to the energy transfer from Eu3+ to Mn3O4 NPs. The intensity parameters related to the radiative transitions within 4f configuration of Eu3+ ions are determined and analyzed using Judd-Ofelt theory. The magnetization versus field (M-H) at 12 h of Mn3O4 NPs shows the highest saturation magnetization. The ESR spectrum exhibits resonance signals with effective isotropic g values at 1.9, 3.0 and 4.3 where g at 1.9 are attributed to Mn2+ centers in an octahedral asymmetry and g at 3.0 and 4.3 are attributed to the rhombic symmetry of the Mn2+ ions. Present glass compositions are established to be promising for the development of photonic devices.

Physical and Structural Properties of Neodymium Doped Lithium Boro-Tellurite Glasses

Nd3+ doped lithium borotellurite glasses were successfully been prepared by conventional melt-quenching method with the chemical composition (70.0)B2O3-(5.0)TeO2-(25.0-x) Li2CO3-xNd2O3 (where x = 0.0, 0.2, 0.4, 0.6, 0.8 and 2.0 mol%) by varying the Neodymium content. The physical properties such as density, molar volume and oxygen packing density were measured. The structural properties have been studied through X-ray diffraction (XRD) analysis and Fourier Transform Infrared (FTIR) spectroscopy. The XRD pattern has been used to confirm the amorphous nature of the glass samples. There are no sharp peaks were observed in XRD patterns of the glass samples which confirmed the amorphous nature of the glass. FTIR spectra were used to analyse the functional groups present in the glass samples. The FTIR spectra reveal the presence of B-O-B, B-O, BO3, BO4,Te-O and characteristic of the hydrogen bond in the prepared glass samples.

Development of Eu3+ doped boro-tellurite oxyfluoride glass and their Judd-Ofelt analysis for red laser gain medium application

Abstract This paper investigated the physical, optical, luminescence and radiative properties of Eu3+ doped borotellurite oxyfluoride glass with composition (30-x)TeO2-30B2O3-10ZnF2-30BaO-xEu2O3 where x are 0.05, 0.10, 0.50, 1.00 and 1.50 mol%. The glass samples were fabricated by melt and quenching method. The physical and optical properties were investigated from density, molar volume and refractive index. Meanwhile absorption spectra that show several transitions in the ultraviolet to near infrared region interpret the optical properties of the glass sample. The emission spectra of glass sample were measured under excited λex = 394 nm. The highest peak of emission spectra occurs in 1.5 mol% of Eu2O3 due to 5D0→7F2 transition centered at 613 nm. The emission intensity was increased by the addition of Eu2O3 from 0.05 mol% to 1.5 mol%. In addition, Judd-Ofelt (JO) theory was used to define the radiative properties and lasing potential of the glass sample. The value of JO parameter Ω2, Ω4, Ω6 was calculated and compared with literatures. Other radiative properties including experimental (fexp) and calculated (fcal) oscillator strengths, stimulated emission cross-sections (σ), radiative transition probability (AR), experimental and calculated branching ratios (βR) of glass sample were determined and discussed in term of red laser gain medium application.

A Comparative study of TeO2 concentration on zinc barium boro-tellurite glass doped with Sm3+

Abstract Properties of Sm3+ doped zinc barium boro-tellurite glass (ZBBT glass) with the formula 10TeO2-35B2O3-30BaO-24ZnO-1Sm2O3 and 35TeO2-10B2O3-30BaO-24ZnO-1Sm2O3 prepared by conventional melt quenching technique and their physical, optical and photoluminescence properties were investigated. The physical properties have been measured using a densitometer kit based on Archimedes’ principle. The result of the measurement shows that ZBBT glass with the higher TeO2 concentration have higher value in density and molar volume, but it has the lower value in the lifetime. The UV-VIS-NIR absorption spectra were recorded at room temperature in the wavelength range of 200-2,500 nm. From the measurement, it is known that glass with 10 mol% of TeO2 have a higher absorbance value compared to 35 mol% of TeO2. Seven luminescence bands in excitation spectra represent the transitions from the ground state 6H5/2 to various excited states. Furthermore, the emission spectra were observed under 403 nm light from the xenon flash lamps, four luminescence bands were observed at 562 nm (4G5/2→6H5/2), 598 nm (4G5/2→6H7/2), 645 nm (4G5/2→6H9/2) and 706 nm (4G5/2→6H11/2), intense reddish orange emission was found at 598 nm.

Structural and Magnetic Properties of Eu3+ Doped Borotellurite Glass Containing Manganese Nanoparticles

We report the structural and magnetic properties of 30B203-(59-x)TeO2-10MgO-1Eu2O3-xMn3O4 glass prepared via melt quenching method. The glass samples are characterized by X-ray Diffraction (XRD), Raman Spectroscopy and Vibrating Sample Magnetometer (VSM). The existence of broad hump in X-ray diffraction (XRD) pattern verifies the amorphous nature of glasses. Raman spectra displays a shift in the vibrational modes of TeO4 and TeO3 units and thereby indicate an alteration in the glass network structure due to the incorporation of Mn3O4 NPs. The influence of varying Mn3O4 nanoparticles (NPs) concentrations on the magnetic were determined. The glass saturation magnetization and susceptibility were founded to be in the range of (5.45 × 10-2 ± 0.27 −8.49 × 10-2 ± 0.42) emug-1and (4.54 × 10-6 ± 0.23 − 7.08 × 10-6 ± 0.35) emuOe-1g-1 respectively. The obtained hysteresis curve indicates that the glass samples are paramagnetic materials which may be useful for developing new magneto-optical devices.

Enhanced luminescence properties of Nd3+ doped boro-tellurite glasses via silver additive

The improvement in the luminescence intensity of the rare earth doped glasses is a challenging issue. In this work, the effect of the silver nanoparticles on luminescence spectrum of Nd3+ doped boro-tellurite glasses is studied. The glasses are prepared by conventional melt-quenching technique and thermal processing to reduce the silver ions and nucleate metallic particles. The transmission electron microscopy is used to probe the formation and growth of the silver nanoparticles with an average size of about 18nm after 12h of continuous heat-treatments. The visible upconversion emissions are enhanced up to 3 times after 4h of heat-treatment, applying an excitation wavelength at 800nm. A 2.3-fold enhancement is also observed in near-infrared emission (centered at 1.06μm). The mechanisms and interactions between metal species and rare earth ions are discussed.

The Preparation and Physical Characteristic of Sm<sup>3+</sup> Doped Borotellurite Glass

Borotellurite glasses were generally applied in rare earth optical materials due to their excellent physical properties. Samarium doped borotellurite glasses have been identified as one of the potential candidate for optical applications. Therefore, the aim of this study is to identify the physical properties of Sm3+ doped borotellurite glasses by mean of their density, molar volume, microhardness and X-ray diffraction. In this study, the Sm3+ doped borotellurite glasses of the system (70-x)TeO2-20B2O3-10ZnO-xSm2O3 as the samarium trioxide varies from (x = 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol%) have been prepared by melt-quenching method. The amorphous nature of the prepared glass samples have been confirmed through XRD spectral analysis. The values of density are found to vary from 4.541g/cm3 to 4.837g/cm3 as well as the values of molar volume as it varies from 29.118cm3/mol to 28.314cm3/mol with the increase of Sm3+ content. The physical properties corresponding to compositional changes have been analysed and the result are reported and presented.

FTIR and UV-Vis-NIR Spectral Studies of Borotellurite Glass

A glass system based on composition of 80TeO2-(10-x) B2O3 -10PbO-xNd2O3, where 0.0mol% ≤ x ≥ 2.5mol% was successfully prepared by melt-quenching method. The structural and optical behavior of the Nd3+ doped borotellurite glasses are well studied by mean of their FTIR, XRD as well as UV-Vis -NIR spectroscopy. The XRD pattern obtained confirms the amorphous nature of the glass. Meanwhile, the infra-red absorption spectra of glass samples obtained are recorded using an FTIR spectrometer in the wave number ranging from 400 to 4000 cm-1. The bands observed were attributed to the different modes of vibrations of Te-O band. From the absorption spectral measurements, the value of optical band gap (Eopt) and the Urbach energy (ΔE) values were calculated with the results were then been discussed nor reported. Quantitative justification of these absorption bands shows that the values of the experimental wave number for most absorption bands are in agreement with the theoretical ones. Optical absorption spectra show that the absorption edge has a tail extending towards lower energies. In general, an increment or a decrement in Urbach’s energy can be considered to be due to a deformation of glass network.

Spectroscopic Studies on Er3+ doped Boro-Tellurite Glasses

Er3+ doped boro-tellurite glasses with the chemical composition (40–x)B2O3+30TeO2+10Na2O+10ZnO+5Li2O+5CaO+xEr2O3 (where x = 0.01, 0.1, 1, 2 and 3 wt%) were prepared by conventional melt quenching technique. The spectroscopic analyses were made through absorption and luminescence measurements. From the absorption spectra, bonding parameters, oscillator strengths and Judd-Ofelt (JO) parameters were calculated. Through the luminescence spectra the various lasing parameters such as stimulated emission cross-section (σP), branching ratios () and radiative lifetime (τcal) were calculated for the transition and the results were presented.

Photoluminescence of Er<sup>3+</sup>: PbO - B<sub>2</sub>O<sub>3</sub> - TeO<sub>2</sub> Glass under 650nm Excitation Wavelength

Erbium doped borotellurite glass has been identified as one of the most potential candidate for optical applications due to their excellent in physical and chemical properties. Therefore, the aim of this study is to identify the optical properties by mean of their UV-Vis and photoluminescence spectroscopic of the Er3+ doped borotellurite glass. In this work, erbium doped borotellurite glass, (80-x)TeO2-10 B2 O3-10PbO-xEr2O3, where 0.5 mol % x 2.0 mol % has been successfully fabricated by using melt-quenched techniques. The glass obtained is in good quality since it shows no sign of devitrification. The glass sample has undergone some physical and optical measurements. From the XRD results, it confirms that the glass is in amorphous nature. Meanwhile, it is found that the density of the glass sample increases from 4.4187 gcm-3 to 4.5769 gcm-3 with respect to Er content. For the optical properties, the absorption spectra were measured by UV-Vis-NIR spectrophotometer in the range 400-900 nm interval. From the absorption spectra, the 650 nm excitation wavelength is found to be the most predominant peaks. From the photoluminescence spectra, five significant emission peaks have been observed where by four of them is in the visible regions which is corresponds to 440 nm, 486 nm, 520 nm and 650 nm wavelength while the other one is in NIR regions at 794 nm. Some other results were also been analyzed and presented.

Structural and optical studies on Eu3+ doped boro-tellurite glasses

Eu3+ doped boro-tellurite glasses (69 − x)B2O3 + xTeO2 + 15Na2CO3 + 15NaF + 1Eu2O3 (where x = 0, 10, 20, 30 and 40 wt%) have been prepared and their structural and optical properties were studied through XRD, FTIR, absorption, luminescence and decay time measurements. The FTIR spectra reveal the presence of B–O–B bond bending vibrations and Te–O–Te or O–Te–O linkage bending vibrations in the prepared glasses. The absorption spectral measurements were used to calculate the bonding parameters (β¯, δ). The direct, indirect allowed band gap (Eopt), band tail parameter (B) and Urbach energy (ΔE) values of the prepared glasses have also been determined from the absorption spectral measurements. The phonon sideband is observed from the excitation spectra on the higher energy side of the 7F0 → 5D2 transition. The phonon energy (hω) and the electron–phonon coupling constant (g) were also derived from the phonon sideband spectra. Through the luminescence spectra, Judd–Ofelt (JO) intensity parameters (Ωλ, λ = 2, 4 and 6) and the luminescence intensity ratio (R) have been determined. The JO parameters have also been used to calculate the radiative properties like transition probability (A), stimulated emission cross-section (σPE), radiative lifetime (τrad), and branching ratios (βR) for the 5D0 → 7FJ (J = 0, 1, 2, 3 and 4) emission transitions of the Eu3+ ions. The experimental lifetime of the 5D0 level is found to be single exponential for all the prepared glasses. The obtained results were discussed and reported in the present work.

Concentration dependent Eu3+ doped boro-tellurite glasses—Structural and optical investigations

Eu3+ doped boro-tellurite glasses with the chemical composition (40−x)B2O3+30TeO2+15MgO+15K2O+xEu2O3 (where x=0.01, 0.1, 1, 2 and 3wt%) have been prepared by following the conventional melt quenching technique. Structural and optical behavior of the prepared Eu3+ doped boro-tellurite glasses were studied and compared with reported literature. The XRD pattern confirms the amorphous nature and the FTIR spectral studies explore the presence of BO stretching vibrations, O3BOBO3 bond bending vibrations along with the bending vibration of TeOTe linkages in the prepared glasses. Through the optical absorption spectra, bonding parameters (β¯,δ) were calculated to identify the ionic/covalent nature of the glasses. Judd–Ofelt (JO) parameters have been calculated from the luminescence spectral measurements. The JO parameters (Ωλ, λ=2, 4 and 6) were used to calculate the radiative properties like transition probability (A), stimulated emission cross-section (σPE), radiative lifetime (τrad), and branching ratios (βR) for the 5D0→7FJ (J=0, 1, 2, 3 and 4) emission transitions of the Eu3+ ions. The local site symmetry around the Eu3+ ions were calculated through the luminescence intensity ratio (R) of the 5D0→7F2 to 5D0→7F1 transitions. The experimental lifetime of the 5D0 level in the Eu3+ doped boro-tellurite glasses has also been calculated and compared with similar Eu3+ glasses. The lifetime of the 5D0 level is found to be less than the reported glasses and it may be due to the presence of OH− groups in the prepared glasses. The Optical band gap (Eopt), band tailing parameter (B) and the Urbach energy (ΔE) values of the prepared glasses were calculated from the absorption spectral measurements and the results were discussed and reported.