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. 2024 Sep 25;14(1):22025.
doi: 10.1038/s41598-024-72110-x.

Gamma irradiation effects on photoluminescence and semiconducting properties of non-conventional heavy metal binary PbO-Bi2O3 glasses

M A Marzouk  1   2 , I S Ali  3
Affiliations

Gamma irradiation effects on photoluminescence and semiconducting properties of non-conventional heavy metal binary PbO-Bi2O3 glasses

M A Marzouk et al. Sci Rep. .

Abstract

Non-conventional heavy metal oxide glasses have attracted great interest owing to their unique optical properties and their radiation shielding behavior. Non-conventional glasses of main chemical composition (100 - x) PbO-xBi2O3 where x = 35, 30, 25, 20, 15, 10, and 5 were prepared through the conventional melting and annealing approach. X-ray diffraction measurements denoted the amorphous nature of the prepared glasses. The optical absorption in the UV-visible range recorded strong UV-near visible absorption spectra that correlated to trivalent Bi3+ ions. The optical band gap Eopt, Urbach energy ∆E, and the refractive index were identified for the prepared glasses employing the cognizant theories. The variations in the optical parameters have been associated with the increasing Bi2O3 and the doses of γ- irradiation. The photoluminescent properties of the prepared non-conventional binary Bi2O3-PbO glasses were recorded in the visible range after UV excitation and the color coordinates are located and distributed in the hue violet degree. FT-IR spectroscopic measurements before and after gamma irradiation were applied to investigate the structural changes in the binary heavy metal PbO-Bi2O3 glasses. FTIR data specified that the glass network is composed of different structural building units from BiO3/BiO6 and PbO3/PbO4 depending on the addition ratio between PbO and Bi2O3.

Keywords: Gamma irradiation; Glass; Heavy metal; Optical.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Fig. 1
Fig. 1
X-ray diffraction of unconventional binary PbO–Bi2O3 glasses.
Fig. 2
Fig. 2
Photograph of the prepared unconventional binary PbO–Bi2O3 glasses.
Fig. 3
Fig. 3
UV–Visible absorption spectra of unconventional binary PbO–Bi2O3 glasses subjected to different doses of gamma irradiation: (a) 0 Mrad (unirradiated), (b) 2 Mrad, and c 10 Mrad.
Fig. 4
Fig. 4
Transmission spectra of unconventional binary PbO–Bi2O3 glasses subjected to different doses of gamma irradiation: (a) 0 Mrad (unirradiated), (b) 2 Mrad, and (c) 10 Mrad.
Fig. 5
Fig. 5
A plot of (αhv)1/2 as a function of hv for unconventional binary PbO–Bi2O3 glasses before gamma irradiation (a) and the behavior trend of the optical band gap with Bi2O3 content (b).
Fig. 6
Fig. 6
A plot of (αhv)1/2 as a function of hv for unconventional binary PbO–Bi2O3 glasses after 2 Mrad gamma irradiation (a) and the behavior trend of the optical band gap with Bi2O3 content (b).
Fig. 7
Fig. 7
A plot of (αhv)1/2 as a function of hv for unconventional binary PbO–Bi2O3 glasses after 10 Mrad gamma irradiation (a) and the behavior trend of the optical band gap with Bi2O3 content (b).
Fig. 8
Fig. 8
Emission spectra of binary Bi2O3–PbO glasses at λex = 266 nmm (a) before irradiation and (b) after 10 Mrad gamma irradiation.
Fig. 9
Fig. 9
Excitation spectra of binary Bi2O3–PbO glasses.
Fig. 10
Fig. 10
CIE chromaticity diagram of binary Bi2O3–PbO glasses.
Fig. 11
Fig. 11
FTIR absorption spectra of the prepared glasses before gamma irradiation.
Fig. 12
Fig. 12
FTIR absorption spectra of the prepared glasses after 10 Mrad gamma irradiation.
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References

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