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Tailoring Optical Bandpass Filters in Sodium Silicate Glass: Impact of CuO Incorporation.

Authors :
Rabie, G. O.
Abdelghany, Amr M.
Hammad, Ahmed H.
Source :
SILICON (1876990X); Oct2024, Vol. 16 Issue 15, p5603-5612, 10p
Publication Year :
2024

Abstract

The research aims to characterize a melt-quenched sodium silicate glass doped with different concentrations of copper oxide (CuO) as an optical filter material. Sodium oxide (Na<subscript>2</subscript>O) was fixed at 45 mol%, whereas CuO was introduced to the glass network at the expense of Na<subscript>2</subscript>O, from 0.2 to 0.8 mol%. The silicate network comprises Si–O–Si vibrations in symmetrical and assymmetrical modes, with the formation of non-bridging oxygens (NBOs) as a result of the presence of the modifiers NaO<subscript>6</subscript> and distorted tetragonal CuO<subscript>6</subscript> units. The optical transmittance was zero in the UV region and in the visible region starting from 600–900 nm, depending on the glass composition and the CuO ratio. The glass containing 0.6 mol% CuO had a maximum transmittance peak (T = 0.64) at 450 nm, whereas the glass containing 0.8 mol% CuO exhibited a low transmittance peak (T = 0.28) at 450 nm. The optical parameters were discussed in terms of the effect of CuO, in which the optical band gap varied from 3.168 eV to 2.819 eV as the CuO changed from 0 to 0.8 mol%. Other important parameters like Urbach energy, refractive index, and their related variables were determined and discussed. The glass density of sodium silicate glass is 2.478 g/cm<superscript>3</superscript>, which has been slightly increased to 2.491 g/cm<superscript>3</superscript> due to the effect of the CuO dopant. Furthermore, as the CuO content increased, the optical basicity increased from 1.222 to 1.237, indicating that the glass was thermodynamically stable. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
1876990X
Volume :
16
Issue :
15
Database :
Complementary Index
Journal :
SILICON (1876990X)
Publication Type :
Academic Journal
Accession number :
180214393
Full Text :
https://doi.org/10.1007/s12633-024-03090-w