%K KĂŠmia
%X 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.
%L acta73987
%A  Ivetić Tamara
%A  Petrović Jelena
%A  Klisurić Olivera
%A  Lukić-Petrović Svetlana
%D 2020
%O Bibliogr.: 172. p. ; ill. ; ĂśsszefoglalĂĄs angol nyelven
%J Proceedings of the International Symposium on Analytical and Environmental Problems
%T Optical energy bandgap tuning of spinel zinc stannate by erbium/ytterbium doping
%V 26
%P 169-172