Laser-Modified Arsenic Sulfide Vitreous Semiconductor Films: Structural Properties and Photoluminescence Changes

IF 0.48 Q4 Physics and Astronomy Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-02-27 DOI:10.1134/S1062873824709966

D. Shuleiko, E. Kuzmin, P. Pakholchuk, I. Budagovsky, D. Pepelyaev, E. Konstantinova, S. Zabotnov, P. Kashkarov, A. Kolobov, S. Kozyukhin

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Abstract

Owing to transparency in the near and middle infrared ranges, nanostructures based on arsenic sulfide (As₂S₃) are of interest for designing integrated optics elements. We investigated laser-induced structural and photoluminescence (PL) changes in thermally evaporated and spin-coated vitreous As₂S₃ films. Pulsed (λ = 515 nm, τ = 300 fs) and continuous (λ = 532 nm) laser irradiation was used as a method allowing structural modification without changing the chemical composition of As₂S₃ films. The results of our study reveal laser-induced formation of sulfur S₈ rings and polymer sulfur chains in the spin-coated films, while the local chemical composition of thermally evaporated films does not change. Laser-induced increase in the PL intensity in the range of 1.6–2.0 eV is observed, which is associated with the creation of defect states near the Urbach edge. Laser irradiation presumably increases the amount of homopolar bonds acting as radiative carrier recombination defects, while paramagnetic defects in a form of S dangling bonds do not contribute to PL.

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来源期刊

Bulletin of the Russian Academy of Sciences: Physics Physics and Astronomy-Physics and Astronomy (all)

CiteScore

0.90

自引率

0.00%

发文量

251

期刊介绍： Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular, letters to the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.