Electronic properties of silver delafossite materials (AgB$_{1-x}$Fe$_{x}$O$_{2})$ using high-throughput calculations

ORAL

Abstract

Delafossites are promising materials which can be used as photovoltaics or photocatalysts to reduce the CO$_{2}$ to viable products such as CH$_{4}$ and CH$_{3}$OH. In this work, we present a high-throughput computational study for three delafossite oxides of the form AgB$_{1-x}$Fe$_{x}$O$_{2}$ (For B $=$ Al,Ga,In), in search of candidate materials which can harness visible light. We explore the effect on optoelectronic properties of these materials when the B site is alloyed with Fe. A large number of structures are studied by varying the Fe doping percentage(x) from 0 to 0.05 and by choosing the impurity sites randomly. Statistical analysis is carried out to study the relative positions of the substituent atoms (Fe). We will discuss the structural trends and the optoelectronic properties of these materials to determine their viability in potential photelectrochemical or photovoltaic applications.

Authors

  • Gihan Panapitiya

    Department of Physics and Astronomy, West Virginia University

  • James P. Lewis

    Department of Physics and Astronomy, West Virginia University, Department of Physics, West Virginia University, Morgantown, WV 26506 / NETL, U.S. Department of Energy, Pittsburgh, PA 15236