Cathodoluminescence and X-Ray Luminescence of ZnIn2S4 and CdGa2S4 Single Crystals

Aramă Efim; Pîntea Valentina; Shemyakova Tatiana

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ARAMĂ, Efim, PÎNTEA, Valentina, SHEMYAKOVA, Tatiana. Cathodoluminescence and X-Ray Luminescence of ZnIn2S4 and CdGa2S4 Single Crystals. In: IFMBE Proceedings: . 5th International Conference on Nanotechnologies and Biomedical Engineering, Ed. 5, 3-5 noiembrie 2021, Chişinău. Chişinău: Pontos, 2022, Ediția 5, Vol.87, pp. 422-428. ISSN 16800737. DOI: https://doi.org/10.1007/978-3-030-92328-0_55

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IFMBE Proceedings
Ediția 5, Vol.87, 2022

Conferința "Conference on Nanotechnologies and Biomedical Engineering"
5, Chişinău, Moldova, 3-5 noiembrie 2021

Cathodoluminescence and X-Ray Luminescence of ZnIn₂S₄ and CdGa₂S₄ Single Crystals

DOI:https://doi.org/10.1007/978-3-030-92328-0_55

Pag. 422-428

Aramă Efim¹, Pîntea Valentina², Shemyakova Tatiana³

¹ ”Nicolae Testemițanu” State University of Medicine and Pharmacy,
² Technical University of Moldova,
³ Institute of Applied Physics

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GA 810652

Promoting smart specialization at the Technical University of Moldova by developing the field of Novel Nanomaterials for BioMedical Applications through excellence in research and twinning

Disponibil în IBN: 30 ianuarie 2022

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Rezumat

Zinc thioindate and gallium thiogallate single crystals were grown by a chemical vapor transport method. The cathodoluminescence and X-ray luminescence spectra of ZnIn₂S₄ and CdGa₂S₄ single crystals were studied. From cathodoluminescence spectra of ZnIn₂S₄ at low temperatures the forbidden gap width of (2.96 ± 0.02) eV at 80 K and optical depth of the deep acceptor level E_A = (E_V + 0.30) eV were determined. In the X-ray luminescence spectra of CdGa₂S₄ a single emission band is observed with an energy maximum at 2.14 eV and a slope within the high-energy range at approximately 2.34 eV identified as optical transitions of donor-acceptor type.

Cuvinte-cheie
Cadmium thiogallate, cathodoluminescence, Ternary semiconductor, X-ray luminescence, Zinc thioindate

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<title xml:lang='en'>Cathodoluminescence and X-Ray Luminescence of ZnIn2S4 and CdGa2S4 Single Crystals</title>
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<subject>Cadmium thiogallate</subject>
<subject>cathodoluminescence</subject>
<subject>Ternary semiconductor</subject>
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<subject>Zinc thioindate</subject>
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<description xml:lang='en' descriptionType='Abstract'><p>Zinc thioindate and gallium thiogallate single crystals were grown by a chemical vapor transport method. The cathodoluminescence and X-ray luminescence spectra of ZnIn<sub>2</sub>S<sub>4</sub>&nbsp;and CdGa<sub>2</sub>S<sub>4</sub>&nbsp;single crystals were studied. From cathodoluminescence spectra of ZnIn<sub>2</sub>S<sub>4</sub>&nbsp;at low temperatures the forbidden gap width of (2.96 &plusmn; 0.02) eV at 80&nbsp;K and optical depth of the deep acceptor level E<sub>A</sub>&nbsp;= (E<sub>V</sub>&nbsp;+ 0.30) eV were determined. In the X-ray luminescence spectra of CdGa<sub>2</sub>S<sub>4</sub>&nbsp;a single emission band is observed with an energy maximum at 2.14&nbsp;eV and a slope within the high-energy range at approximately 2.34&nbsp;eV identified as optical transitions of donor-acceptor type.&nbsp;</p></description>
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