Optical, electrical, mechanical properties of Pr3+ and Yb3+ doped phosphate glasses

Deepa, A V; Vinothkumar, P.; Moorthy, K.; Muralimanohar, P.; Mohapatra, M.; Praveenkumar, S.; Murugasen, Priya

doi:10.1007/s11082-020-02606-z

Cited by 11 publications

(2 citation statements)

References 23 publications

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“…The absence of sharp peaks except for the steep hump at 280 nm in all the four samples confirms the XRD analysis of the vitreous glass nature. The absence of absorption peaks satisfies the essential factors for nonlinear behavior in optical fibers, namely minimum absorption and low cutoff wavelengths [40]. However, a predominantly strong absorptive band in the UV region at 280 nm and high transmittance in the visible and near IR regions are observed, which also increases with doping [41,42].…”

Section: Uv-visible Spectral Analysismentioning

confidence: 84%

Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

Gracie

Geetha²,

Battisha³

2023

J. Phys. D: Appl. Phys.

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Silica phosphate glasses strengthened with calcium oxide modifier and doped with different concentrations (0%, 0.5%, 1%, 1.5 mol%) of praseodymium (Pr3+) were synthesized by sol-gel method. The absence of sharp peaks in the x-ray diffraction (XRD) spectra confirms non-crystallinity of the glasses. Higher doping indicates increasing optical band gaps due to Burstein Moss shift, which also reflects on structural disorders at the absorption tails as validated by Urbach’s rule. The density increases with a subsequent decrease in oxygen packing density, proving the mechanical and chemical stability of the glasses. The composite glasses are multifunctional with marked absorption at 280 nm predicting its purpose as UV shielding films. Luminescence corresponding to the intra 4f transition, 〖1_D〗_2→〖1_G〗_4 in the IR region, with high transmission and low reflection losses suggests the use of the synthesized glass material for S-band telecommunications, while the radiative process involving 〖3_P〗_0→〖3_F〗_2 yields a predominant red laser source. Commission International de l’Eclairage (CIE) color coordinates observe warmer red emission corresponding to Correlated Colour Temperature (CCT) of 3200 K. The composite silica phosphate glass systems evidence the effective role of Pr3+ for photonic applications.

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Section: Uv-visible Spectral Analysismentioning

confidence: 84%

Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

Gracie

Geetha²,

Battisha³

2023

J. Phys. D: Appl. Phys.

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“…The addition of rare earth oxides in the glass structure were found to be effective ways to modify various glass properties [20][21][22][23]. The fundamental function of rare earth oxides in glass is modifier since the behavior of rare earth oxides is like other modifier oxides [15,[24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Structure and chemical durability improvement of alkali silicate glass by zirconium dioxide and erbium oxide addition

DENPRAWAT,

SINWANASARP,

KIDKHUNTHOD

et al. 2023

J Met Mater Miner

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Glass structure tailoring of alkali silicate glasses by addition of ZrO2 and Er2O3 is found to enhance the chemical durability of glasses. ZrO2 (x ranged between 5 mol% to 15 mol%) and Er2O3 (y ranged between 0.5 mol% to 1.5 mol%) were used to replace SiO2 and Na2O, respectively, in the glasses with the nominal composition of 10Li2O-(15-y)Na2O-10CaO-(65-x)SiO2-xZrO2-y Er2O3. The samples were prepared by conventional melt quenching technique. The structures of produced glasses were examined by X-ray absorption spectroscopy (XAS) and Raman spectroscopy. XAS spectra demonstrated that the oxidation numbers of Zr and Er ions were +4 and +3, respectively. The chemical environment around both cations was six-fold coordination. In addition, Raman spectra demonstrated that the Zr4+ ions formed the Q4(Zr) structure, which caused the reduction of non-bridging oxygen. In case of the Er3+ ions, the formation of the Si-O-Er bonds was explained from the Raman study. The chemical durability of glass was determined from Na+ ions leaching values. In pH 7 solution, the leached Na+ ions reduced from 25.67% to 21.43% and from 22.50% to 20.49% as a function of concentration of ZrO2 (x = 5 mol% to 15 mol%) and Er2O3 (y = 0.5 mol% to 1.5 mol%), respectively. As the results, the chemical durability of the ZrO2-containing and Er2O3-containing glasses were significantly improved due to charge compensated mechanism and enhancing network rigidity by increasing cation field strength. Moreover, the micro-hardness (580 HV to 837 HV) and density (2.54 g⸳cm-3 to 2.82 g⸳cm-3) also displayed an increased tendency with larger concentration of ZrO2 and Er2O3.

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The role of PbO on the optical and radiation shielding characteristics of Eu3+ ions doped B2O3 + As2O3 + Sb2O3 + Al2O3 + PbO glasses

Raji,

Subbaraidu,

Swapna

et al. 2024

Appl. Phys. A

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Optical, electrical, mechanical properties of Pr3+ and Yb3+ doped phosphate glasses

Cited by 11 publications

References 23 publications

Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

Structure and chemical durability improvement of alkali silicate glass by zirconium dioxide and erbium oxide addition

The role of PbO on the optical and radiation shielding characteristics of Eu3+ ions doped B2O3 + As2O3 + Sb2O3 + Al2O3 + PbO glasses

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