Luminescent properties on ZnO:Cr nanocrystals and thin layers

Goglidze Tatiana; Dementiev Igor; Goncearenco Evghenii; Nedeoglo Natalia; Iurieva Tatiana; Nedeoglo Dumitru

Articolul precedent

Articolul urmator

570

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2024-01-11 20:58

SM ISO690:2012

GOGLIDZE, Tatiana, DEMENTIEV, Igor, GONCEARENCO, Evghenii, NEDEOGLO, Natalia, IURIEVA, Tatiana, NEDEOGLO, Dumitru. Luminescent properties on ZnO:Cr nanocrystals and thin layers. In: IFMBE Proceedings: . 4th International Conference on Nanotechnologies and Biomedical Engineering, Ed. 4, 18-21 septembrie 2019, Chişinău. Switzerland: Springer Nature Switzerland AG, 2020, Ediția 4, Vol.77, pp. 133-136. ISBN 978-303031865-9. ISSN 16800737. DOI: https://doi.org/10.1007/978-3-030-31866-6_28

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IFMBE Proceedings
Ediția 4, Vol.77, 2020

Conferința "Conference on Nanotechnologies and Biomedical Engineering"
4, Chişinău, Moldova, 18-21 septembrie 2019

Luminescent properties on ZnO:Cr nanocrystals and thin layers

DOI:https://doi.org/10.1007/978-3-030-31866-6_28

Pag. 133-136

Goglidze Tatiana¹, Dementiev Igor¹, Goncearenco Evghenii¹², Nedeoglo Natalia¹, Iurieva Tatiana¹, Nedeoglo Dumitru¹

¹ Moldova State University,
² National Institute for Laser, Plasma and Radiation Physics (INFLPR)

Proiecte:

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: 1 noiembrie 2020

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Rezumat

Both undoped and chromium doped zinc oxide nanocrystal powders are obtained by chemical deposition and hydrothermal methods. ZnO and ZnO:Cr thin layers on the surface of ZnSe and ZnSe:Cr samples, respectively, are obtained by isovalent substitution of selenium by oxygen in the process of thermal treatment of the samples in air. Photoluminescence spectra of the ZnO and ZnO:Cr nanopowders and thin layers obtained by various techniques are investigated at room temperature. Cr doped ZnO powders obtained by chemical deposition and hydrothermal methods improves the powder quality, as evidenced exciton emission is more intensive. New emission bands are found in visible (615 nm, 625 nm) and infrared (925 nm, ~2000 nm) spectral ranges for ZnO:Cr nanopowders and thin films. The contribution of Cr impurity to the formation of emission bands is discussed.