Optical energy bandgap tuning of spinel zinc stannate by erbium/ytterbium doping

Ivetić Tamara and Petrović Jelena and Klisurić Olivera and Lukić-Petrović Svetlana: Optical energy bandgap tuning of spinel zinc stannate by erbium/ytterbium doping.

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Abstract

This work shows the results of an optical energy bandgap (Eg) investigation supported by scanning electron microscopy (SEM) of spinel-type zinc stannate (Zn2SnO4) upon doping with rear earth (RE3+) ions (Er3+, Yb3+). The powder samples are synthesized by a mechanochemical solid-state method with the final annealing step at 1200 C. The reference Zn2SnO4 powder sample bandgap (3.87 eV) turning lower upon doping, precisely to 3.5 eV, and 3.37 eV bandgap values found for Er-doped Zn2SnO4 and Er,Yb-codoped Zn2SnO4 powder samples, respectively is a confirmation of the successful incorporation of the RE3+ ions into the Zn2SnO4 host structure. Morphology of the obtained powders shows, in general, the non-uniformly shaped agglomerates, while their particle sizes follow up the bandgap decreasing trend with doping.

Item Type: Conference or Workshop Item
Journal or Publication Title: Proceedings of the International Symposium on Analytical and Environmental Problems
Date: 2020
Volume: 26
ISBN: 978-963-306-771-0
Page Range: pp. 169-172
Language: English
Event Title: International Symposium on Analytical and Environmental Problems (26.) (2020) (Szeged)
Related URLs: http://acta.bibl.u-szeged.hu/73792/
Uncontrolled Keywords: Kémia
Additional Information: Bibliogr.: 172. p. ; ill. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.04. Chemical sciences
Date Deposited: 2021. Nov. 17. 11:53
Last Modified: 2022. Aug. 08. 15:39
URI: http://acta.bibl.u-szeged.hu/id/eprint/73987

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