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Latest Issue of “ International Journal of Membrane Science and Technology” has published. Visit link; “ Latest Issue" ....! Special Issue of “International Journal of Membrane Science and Technology” is scheduled for Feb-2022..! Kindly Visit link: “Special Issues for IJMST”

Abstract: Lanthanum-Doped Barium Stannate - a New Type of Critical Raw Materials-Free Transparent Conducting Oxide

International Journal of Advanced Applied Physics Research (Volume 4 Issue 1)
Lanthanum-Doped Barium Stannate - a New Type of Critical Raw Materials-Free Transparent Conducting Oxide
Pages 1-8 D. Gogova, A. Suwardi, Y.A. Kuznetsova, A.F. Zatsepin, L.A. Mochalov, A. Nezhdanov and B. Szyszka DOI: http://dx.doi.org/10.15379/2408-977X.2017.04.01.01 Published: 15 June 2017
Abstract
A pulsed laser deposition-based process for growth of highly-doped epitaxial La:BaSnO₃(001) layers on (001)-oriented SrTiO₃ is developed. The growth window of single-phase epitaxial Ba_0.93La_0.07SnO₃ films is determined and the influence of growth parameters on crystalline quality is studied. Reciprocal space maps showed fully relaxed Ba_0.93La_0.07SnO₃epitaxial layers on SrTiO₃(001). The crystalline quality of material obtained was evidenced through HR-XRD measurements with a full width at half maximum (FWHM) of 290 arcsec for the Rocking curve of the symmetric (002) peak and 108 arcsec for the asymmetric (103) peak. The band gap of the layers, determined from Reflection measurements employing the Kubelka-Munk method, was estimated as 2.97 - 3.01 eV, i.e. very suitable for the applications envisaged. The layers demonstrated electrical conductivity value of 1024 (Ω·cm)^-1at a free carrier concentration of 2.18×10²¹cm^-3and a high transparency (up to 90%) in the visible and NIR range of spectrum. The Ba_0.93La_0.07SnO₃layers grown could be regarded as a cost-effective and thermally and chemically stable alternative to highly doped ZnO-based transparent conductive oxides and to In₂O₃:Sn in applications ranging from solar energy utilization to optoelectronics as well as for the emerging field of transparent and radiation hard electronics.
Keywords
Critical raw materials, TCOs, BaSnO₃, La doping , Kubelka-Munk method.

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