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Structural Characterization of Some As-S-Sb-Te Nanostructured Materials

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5th International Conference on Nanotechnologies and Biomedical Engineering (ICNBME 2021)

Part of the book series: IFMBE Proceedings ((IFMBE,volume 87))

Abstract

Nanostructured As-S-Sb-Te semiconductors were synthesized and characterized by X-ray fluorescence analyzer (XRF), X-ray diffraction, and optical absorption methods. The X-ray diffraction patterns of ivestigated powders show the presence of amorphous and nanocrystalline phases with the structural units As2S3, Sb2S3 and Sb2Te3. The transmission spectra in the region of wavenumbers ν = 1000 ÷ 6000 cm−1 show a high transparence just with a single weak absorption band at ν = 2340 cm−1 caused of the presence H2S impurity. For the alloys of (As2S3)x(Sb2S3)1-x system, with increasing of the Sb2S3 trigonal structural units in the above mentioned system, the absorption edge is shifted toward lower photon energy, that corresponds to the optical band band gap about Eg. = 2.34 eV for As2S3, 2.1 eV for (As2S3)0.65(Sb2S3)0.35, 1.92 eV for (As2S3)0.35(Sb2S3)0.65 and 1.73 eV for Sb2S3.

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Acknowledgment

This work was supported by the project ANCD 20.80009.5007.14.

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Authors and Affiliations

  1. Institute of Applied Physics, Str. Academiei 5, 2028, Chisinau, Republic of Moldova

    Oxana V. Iaseniuc & M. S. Iovu

Authors
  1. Oxana V. Iaseniuc
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  2. M. S. Iovu
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Editors and Affiliations

  1. Academy of Sciences of Moldova, Chisinau, Moldova

    Ion Tiginyanu

  2. Department of Microelectronics and Biomedical Engineering, Technical University of Moldova, Chisinau, Moldova

    Victor Sontea

  3. Department of Microelectronics and Biomedical Engineering, Technical University of Moldova, Chisinau, Moldova

    Serghei Railean

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Iaseniuc, O.V., Iovu, M.S. (2022). Structural Characterization of Some As-S-Sb-Te Nanostructured Materials. In: Tiginyanu, I., Sontea, V., Railean, S. (eds) 5th International Conference on Nanotechnologies and Biomedical Engineering. ICNBME 2021. IFMBE Proceedings, vol 87. Springer, Cham. https://doi.org/10.1007/978-3-030-92328-0_11

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  • DOI: https://doi.org/10.1007/978-3-030-92328-0_11

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-92327-3

  • Online ISBN: 978-3-030-92328-0

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