Novel energy materials through structural search

ORAL

Abstract

Sophisticated structure prediction methods have been developed and become essential tools when designing new materials with desired properties. Their successful applications to many systems at various conditions and the increasing amount of available computational power have strongly contributed to their popularity. \\ The Minima Hopping Method (MHM) is a powerful tool to find low energy structures given only the chemical composition of a system and allows the prediction of structures at any boundary condition. Recently, not only the thermodynamic ground states, but also metastable phases accessible through various synthesis methods have drawn considerable interest for energy applications. We present the discovery of novel energy materials, ranging from low-density silicon allotropes with improved absorption in the visible to thermoelectric materials, by optimizing the MHM to imitate synthesis pathways.

Authors

  • Maximilian Amsler

    Northwestern University

  • Stefan Goedecker

    Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland, Basel University, Max-Planck Institut für Microstrukture Physics, University of Basel

  • Chris Wolverton

    Northwestern Univ, Northwestern University