Transparent and conductive oxide films with the perovskite structure: La- and Sb-doped BaSnO3.

Authors :: Wang, H. F.
Liu, Q. Z.
Chen, F.
Gao, G. Y.
Wu, Wenbin
Chen, X. H.
Source :: Journal of Applied Physics; 5/15/2007, Vol. 101 Issue 10, p106105, 3p, 5 Graphs
Publication Year :: 2007
Abstract: We report that (La<subscript>0.07</subscript>Ba<subscript>0.93</subscript>)SnO<subscript>3</subscript> films grown epitaxially on SrTiO<subscript>3</subscript>(001) substrates by laser ablation at 760 °C show a cubic perovskite structure of lattice constant 4.121 Å, excellent optical transmittance in the visible range, and a weak metallic behavior with low resistivity of about 4 mΩ cm within 10–300 K. The transparent perovskite oxide films are n-type conductors, with carrier concentration and mobility at room temperature of about 2×10<superscript>21</superscript> cm<superscript>-3</superscript> and 0.69 cm<superscript>2</superscript>/V s, respectively, and a direct allowed band gap of 4.02 eV. The effect of deposition temperature on structural, optical, and electric properties of the Sb-doped Ba(Sn<subscript>0.93</subscript>Sb<subscript>0.07</subscript>)O<subscript>3</subscript> films was also demonstrated. [ABSTRACT FROM AUTHOR]

Full Text Access

Tools