Dielectric properties, conductivity, UV–visible and infrared spectroscopy of PbO P2O5 NaF glasses containing WO3

Salem, Shaaban M.

doi:10.1016/j.jnoncrysol.2012.03.020

Cited by 11 publications

(2 citation statements)

References 38 publications

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“…5a) reveals characteristic W-O stretching frequencies at $ 947 and 887 cm À 1 originating from the WO 3 units in the LbL film [43]. In addition to WO 3 bands, vibrational stretching modes of C Q N (aromatic groups at 1640 cm À 1 ), of Ar (C Q C) groups at 1550 and 1450 cm À 1 and alkyl (C -H), Ar(C -H) stretch frequencies at 2920 and 3010 cm À 1 , respectively, are observed for the poly(butyl viologen) species in the LbL film [34], which ratified the formation of WO 3 -PBV film.…”

Section: Structural Analysis: Rp and Wo 3 -Pbv Lbl Filmsmentioning

confidence: 99%

A WO3–poly(butyl viologen) layer-by-layer film/ruthenium purple film based electrochromic device switching by 1 volt application

Sydam

Deepa

Shivaprasad

et al. 2015

Solar Energy Materials and Solar Cells

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Section: Structural Analysis: Rp and Wo 3 -Pbv Lbl Filmsmentioning

confidence: 99%

A WO3–poly(butyl viologen) layer-by-layer film/ruthenium purple film based electrochromic device switching by 1 volt application

Sydam

Deepa

Shivaprasad

et al. 2015

Solar Energy Materials and Solar Cells

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“…Moreover, the insertion of WO3 in phosphate glasses within high amounts (>10 mol%) reduces the maximum phonon energy of the phosphate matrix by development of highly polarizable WO6 clusters, resulting interesting features such as photochromism and nonlinear optical absorption [9]. The addition of WO3 is well-known to enhance mechanical, chemical and thermal stabilities [10].…”

Section: Introductionmentioning

confidence: 99%

The tungsten oxide within phosphate glasses to investigate the structural, optical, and shielding properties variations

Sadeq

Elbashir

Almuqrin

et al. 2021

J Mater Sci: Mater Electron

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We prepared a series of sodium phosphate glasses by changing WO3/P2O5 content and investigated structure optical and radiation shielding features as a function of glass composition. The average density (⍴ ) and was found to increase gradually from 2.49 to 3.07 g/cm 3 while the average molar volume values reduced from 47.37 to 44.28 cm 3 /mol with WO3 addition. Also, the average field strength was also computed and found to increase with increasing WO3. The study of optical absorption spectra reveals that, the absorption peaks in the visible region become higher compared to the peaks In the UV region. This observation is accompanied with a color transformation of glasses from light to dark blue color, with more WO3 adding. The existence of pentavalent tungsten state (W 5+ ) is identified by this blue color. with WO3 addition an absorption band at around at 350-390 nm is appeared. Moreover, this band is overlapped with Urbach edge, which regularly produces an artificial edge-like feature at ~400 nm. A detailed deconvolution protocol is required for an appropriate understanding of these spectra and unravelling the hidden Urbach edge. Our analysis shows that, with increasing WO3/P2O5 content, the optical band gap decreases. This behavior can be elucidated in terms of lower band gap of W (2.7 eV) than that of P2O5 (8.5 eV) and the high polarizing power W. Further, the radiation shielding parameters were investigated for the prepared glasses. WO3 addition improves these shielding parameters against radiation. Where, upon the increase of WO3 concentration, the LAC of glass material increases which leads to a decrease in HVL value. Then it is deducible that the amount of WO3 in this glass sample has an important impact on the shielding capability at lower energy values and has a slight impact at higher energy values.

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Raman, FTIR studies and optical absorption of zinc borate glasses containing WO3

et al. 2020

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Dielectric properties, conductivity, UV–visible and infrared spectroscopy of PbO P2O5 NaF glasses containing WO3

Cited by 11 publications

References 38 publications

A WO3–poly(butyl viologen) layer-by-layer film/ruthenium purple film based electrochromic device switching by 1 volt application

A WO3–poly(butyl viologen) layer-by-layer film/ruthenium purple film based electrochromic device switching by 1 volt application

The tungsten oxide within phosphate glasses to investigate the structural, optical, and shielding properties variations

Raman, FTIR studies and optical absorption of zinc borate glasses containing WO3

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