Can I read Design of ternary alkaline-earth metal Sn(II) oxides with potential good p-type conductivity on EtoBox?

Design of ternary alkaline-earth metal Sn(II) oxides with potential good p-type conductivity by Li, Yuwei; Singh, David J.; Du, Mao-Hua; Xu, Qiaoling; Zhang, Lijun; Zhengd, Weitao; Ma, Yanming is a scholarly article available to read on EtoBox.

What is Design of ternary alkaline-earth metal Sn(II) oxides with potential good p-type conductivity about?

Oxides with good p-type conductivity have been long sought after to achieve high performance all-oxide optoelectronic devices. Divalent Sn(II) based oxides are promising candidates because of their rather dispersive upper valence bands caused by the Sn-5s/O-2p anti-bonding hybridization. There are so far few known Sn(II) oxides being p-type conductive suitable for device applications. Here, we present via first-principles global optimization structure searches a material design study for a hitherto unexplored Sn(II)-based system, ternary alkaline-earth metal Sn(II) oxides in the stoichiometry of MSn2O3 (M = Mg, Ca, Sr, Ba). We identify two stable compounds of SrSn2O3 and BaSn2O3, which can be stabilized by Sn-rich conditions in phase stability diagrams. Their structures follow the Zintl behaviour and consist of basic structural motifs of SnO3 tetrahedra. Unexpectedly they show distinct electronic properties with band gaps ranging from 1.90 (BaSn2O3) to 3.15 (SrSn2O3) eV, and hole effective masses ranging from 0.87 (BaSn2O3) to above 6.0 (SrSn2O3) m0. Further exploration of metastable phases indicates a wide tunability of electronic properties controlled by the details of the bondin

Author

Li, Yuwei; Singh, David J.; Du, Mao-Hua; Xu, Qiaoling; Zhang, Lijun; Zhengd, Weitao; Ma, Yanming

Published

2016

Language

EN