Gamma irradiation effects on photoluminescence and semiconducting properties of non-conventional heavy metal binary PbO-Bi 2 O 3 glasses.

Autor: Marzouk MA; Glass Research Department, National Research Centre, 33 EL Bohouth St. (Former EL Tahrir St.), Dokki, P.O.12622, Giza, Egypt. marzouk_nrc@yahoo.com.; Pharos University in Alexandria, Canal Mahmoudiah Street, Smouha, Alexandria, Egypt. marzouk_nrc@yahoo.com., Ali IS; Higher Institute of Optics Technology, Heliopolis, Cairo, Egypt.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Sep 25; Vol. 14 (1), pp. 22025. Date of Electronic Publication: 2024 Sep 25.
DOI: 10.1038/s41598-024-72110-x
Abstrakt: 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-xBi 2 O 3 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 Bi 3+ ions. The optical band gap E opt , 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 Bi 2 O 3 and the doses of γ- irradiation. The photoluminescent properties of the prepared non-conventional binary Bi 2 O 3 -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-Bi 2 O 3 glasses. FTIR data specified that the glass network is composed of different structural building units from BiO 3 /BiO 6 and PbO 3 /PbO 4 depending on the addition ratio between PbO and Bi 2 O 3 .
(© 2024. The Author(s).)
Databáze: MEDLINE
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