Optical properties of titania nanoparticles embedded Er3+-doped tellurite glass: Judd-Ofelt analysis

Yusof, N.N.; Ghoshal, Sib Krishna; Azlan, M.N.

doi:10.1016/j.jallcom.2017.07.102

Cited by 58 publications

(10 citation statements)

References 70 publications

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“…The presence of long-range structural disorder in the prepared glasses is illustrated by the broad dispersed scattering at lower angles. Similar result for the XRD pattern is observed by other previously published research (Yusof et al, 2017.…”

Section: X-ray Diffractionsupporting

confidence: 92%

Structural Properties of Lead Oxide-Doped Zinc Tellurite Glasses

2024

ZJPAS

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The melt quenching technique was used to create a ternary (90-x) TeO2 -xPbO -10ZnO glass system (x = 0, 10, 20, 25, 30, 35, and 40 mol%). The X-ray diffraction (XRD) technique is used for improving the amorphous nature of the glass samples. In addition, to examine the structural characteristics of the glass samples, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectroscopy are used. Raman spectroscopy was used to evaluate the impact of PbO on the glass structure. A strong frequency peak at 729.63-774.69 cm -1 was detected in the Raman spectra, indicating that the TeO4 and TeO3/TeO3+1 structural units make up the majority of the glass network. The TeO3/TeO3+1 structural unit contain non-bonding oxygen molecules that are stretched in the Pb-O, Zn-O, Te-O, and Te-O-Te bridging configurations, vibrations, and Raman spectra.

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Section: X-ray Diffractionsupporting

confidence: 92%

Structural Properties of Lead Oxide-Doped Zinc Tellurite Glasses

2024

ZJPAS

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“…These changes revealed strong covalency with the presence of low symmetry around erbium ions. These values were found to equate to a higher oscillator strength than those of phosphate glass [28], boroaluminosilicate glass [10] and tellurite glass [18,29]. In addition, the values of rms were in the range of 1-2 × 10.…”

Section: Judd-ofelt Analysismentioning

confidence: 80%

Effects of Vanadium on the Structural and Optical Properties of Borate Glasses Containing Er3+ and Silver Nanoparticles

Zaini

Mohamed

2021

Materials

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The erbium-vanadium co-doped borate glasses, embedded with silver nanoparticles (Ag NPs), were prepared to improve their optical properties for potential optical fiber and glass laser application. The borate glasses with composition (59.5–x) B2O3–20Na2O–20CaO–xV2O5–Er2O3–0.5AgCl (x = 0–2.5 mol%) were successfully prepared by conventional melt-quenching method. The structural properties of glass samples were investigated by XRD, TEM and by Fourier transform infrared (FTIR) spectroscopy while optical properties were carried out by UV–Vis spectroscopy by measuring optical absorption and the emission properties were investigated by photoluminescence spectroscopy. The XRD patterns confirmed the amorphous nature of the prepared glass samples whilst the FTIR confirmed the presence of VO4, VO5, BO3 and BO4 vibrations. UV–Vis–NIR absorption spectra reveal eight bands which were located at 450, 490, 519, 540, 660, 780, 980, and 1550 nm corresponding to transition of 4F5/2, 4F7/2, 2H11/2, 4S3/2, 4F9/2, 4I9/2, 4I11/2, and 4I13/2, respectively. The optical band gap (Eopt), Urbach energy and refractive index were observed to decrease, increase and increase, respectively, to the addition of vanadium. Under 800 nm excitation, three emission bands were observed at 516, 580 and 673 nm, which are represented by 2H11/2–4I15/2, 4S3/2–4I15/2 and 4F15/2–4I15/2, respectively. The excellent features of achieved results suggest that our findings may provide useful information toward the development of functional glasses.

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“…The refractive index is an important parameter to be used in a variety of applications such as smart glass, lenses, optical fiber and electronic displays [21]. The structure of an amorphous glass network is closely associated with the amount of non-bridging oxygen in the glass network.…”

Section: Refractive Indexmentioning

confidence: 99%

Incorporation of neodymium, holmium, erbium, and samarium (oxides) in zinc-borotellurite glass: Physical and optical comparative analysis

Azlina,

Azlan,

Suriani

et al. 2024

Kompl. Ispolz. Min. Syra = Compl. Use of Min. Resour.

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Investigating the effect of different types of rare-earth oxides on zinc borotellurite glass is important to determine the potential application in optical devices. The addition of rare-earth oxides in zinc borotellurite glass is well-known to enhance the optical properties due to the effects of 4f-4f transitions. In this work, we aim to compare the effect of different rare-earth oxides on zinc borotellurite glass denoted as ZBTNd, ZBTHo, ZBTEr and ZBTSm. The glass samples were successfully fabricated via the melt-quenched technique. The physical investigation of the glasses has been done by measuring the density and molar volume. It was found that ZBTNd glass has the lowest density than the other glasses due to the small atomic radius in neodymium oxide. High-density value for ZBTHo glass shows potential to be used as radiation shielding properties. The high value of molar volume for ZBTNd glass is advantageous for fiber optics as ZBTNd glass has good performance in elasticity. It was found that ZBTEr has a lower refractive index than the other glasses due to low dispersion characteristics. However, ZBTEr glass has good performance to be used in optical communication applications. It was found that the optical absorption shifts to a longer wavelength beginning from ZBTEr > ZBTHo > ZBTNd > ZBTSm. The optical band gap energy for ZBTEr glass is higher than the other glasses due to the Coulomb repulsion energy for erbium which is greater than neodymium and samarium and slightly higher than holmium. The pattern of electronic polarizability for all glasses was found as follows ZBTSm>ZBTNd>ZBTEr>ZBTHo. The optical basicity for ZBTEr was found highest which indicates a higher acidity, meanwhile, the ZBTNd glass has the lowest value which corresponds to a higher basicity.

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Optical properties of titania nanoparticles embedded Er3+-doped tellurite glass: Judd-Ofelt analysis

Cited by 58 publications

References 70 publications

Structural Properties of Lead Oxide-Doped Zinc Tellurite Glasses

Structural Properties of Lead Oxide-Doped Zinc Tellurite Glasses

Effects of Vanadium on the Structural and Optical Properties of Borate Glasses Containing Er3+ and Silver Nanoparticles

Incorporation of neodymium, holmium, erbium, and samarium (oxides) in zinc-borotellurite glass: Physical and optical comparative analysis

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