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Structural and Compositional Analyses of Spray Pyrolysis α-Lanthanum Sulphide (α-La2S3) Thin Films

  • Condensed Matter
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Abstract

This article describes the first syringe pump spray pyrolysis synthesis of orthorhombic lanthanum sesquisulfide (α-La2S3) thin films. Two precursors lanthanum nitrate La(NO3)3.6H2O and thiourea (SC(NH2)2) were used to develop these rare earth chalcogenides in two different “[S]:[La]” ratios of 5 and 11. The films were developed on glass and silicon substrates. The microstructure, chemical composition, and optical properties of the (α-La2S3) films were thoroughly characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), microanalysis, scanning electron microscopy (SEM), FTIR spectroscopy, and UV–Vis spectrometry. Microstructural analyses showed that both synthesized films had α-La2S3 structure and were polycrystalline. The morphology, vibration intensities, and grain sizes of the films are affected by the amount of sulfide present. The XPS results give a qualitative description of La and S as well as an indication of their potential chemical state. Measurements of particle-induced X-ray emission (PIXE) provide information on the stoichiometric ratios of the constituent components in α-La2S3. The optical bandgap was calculated to be 3.39 eV and 3.45 eV, respectively, for ratios 5 and 11 of the disulfide content.

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Acknowledgements

The authors are grateful to the Laboratory of Theory and Simulation of Materials (LTSM) Facility for support and access to spray machine.

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Authors and Affiliations

  1. Faculty of Sciences and Technology, University Belhadj Bouchaib, BP 284, 46000, Ain-Temouchent, Algeria

    Sabrina Tair & Abdelkader Nebatti Ech-Chergui

  2. Laboratory of Theory and Simulation of Materials, Faculty of Exact and Applied Sciences, University of Oran1 Ahmed Ben Bella, Oran, Algeria

    Noureddine Benaioun, Kouider Driss-Khodja & Bouhalouane Amrani

  3. Department of Physics, Birla Institute of Technology, Ranchi, 835215, Mesra, India

    Sanat Kumar Mukherjee & Rajan Kr. Singh

  4. Unité de Physique Des Dispositifs À Semi-Conducteurs, Faculté Des Sciences de Tunis, Université de Tunis El Manar, Tunis, Tunisia

    Abdelwaheb Boukhachem

  5. Laboratory of Materials (LABMAT), National Polytechnique School (ENP) of Oran, BP 1523, Oran Mnaouar, Oran, Algeria

    M’hamed Guezzoul

  6. Nanotechnology, Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany

    Mohammed Reda Chellali

  7. Platform of Physico-Chemical Analysis, (PTAPC-Laghouat-CRAPC), Laghouat, Algeria

    Abdelhalim Zoukel

  8. Laboratory for Ion Beam Interactions, Ruđer Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia

    Fares Boussahoul

  9. Laboratory of Materials Sciences and Applications (LSMA), Faculty of Sciences and Technology, University of Ain-Temouchent Belhadj Bouchaib, Ain-Temouchent, Algeria

    Abdelkader Nebatti Ech-Chergui

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  1. Sabrina Tair
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Correspondence to Abdelkader Nebatti Ech-Chergui.

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Tair, S., Ech-Chergui, A.N., Mukherjee, S.K. et al. Structural and Compositional Analyses of Spray Pyrolysis α-Lanthanum Sulphide (α-La2S3) Thin Films. Braz J Phys 52, 207 (2022). https://doi.org/10.1007/s13538-022-01206-4

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