Strain dependence of the optical properties and band gap of transparent conducting BaSnO3 and SrSnO3

David J. Singh; Qiang Xu; Khuong P. Ong; Xiaofeng Fan

doi:10.1117/12.2061757

7 October 2014 Strain dependence of the optical properties and band gap of transparent conducting BaSnO₃ and SrSnO₃

David J. Singh, Qiang Xu, Khuong P. Ong, Xiaofeng Fan

Proceedings Volume 9177, Thin Films for Solar and Energy Technology VI; 91770F (2014) https://doi.org/10.1117/12.2061757
Event: SPIE Solar Energy + Technology, 2014, San Diego, California, United States

Abstract

Recent work has shown that perovskite BaSnO₃, when doped n-type by rare earth or Sb substitution, has potential as a transparent conducting oxide (TCO), replacement for In₂O₃:Sn (ITO). Here we discuss the properties of this material and the related SrSnO₃, as well as strain dependence and epitaxy using first principles calculations. The compounds show remarkably strong strain tunability, but in a manner very different from well-studied perovskites such as SrTiO₃. The differences are explained in terms of the s-electron nature of the conduction bands in these stannates.

Citation Download Citation

David J. Singh, Qiang Xu, Khuong P. Ong, and Xiaofeng Fan "Strain dependence of the optical properties and band gap of transparent conducting BaSnO₃ and SrSnO₃", Proc. SPIE 9177, Thin Films for Solar and Energy Technology VI, 91770F (7 October 2014); https://doi.org/10.1117/12.2061757

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