Abstract

Remote epitaxy is a promising growth mode in which a 2D van der Waals layer, usually graphene, is placed on a substrate before epitaxial growth. This paper uses first-principles calculations to evaluate candidate metrics for remote epitaxy viability across several substrate/film combinations. The authors find that electrostatic potential and atomic adsorption are insufficient predictors, while the sliding barrier of small islands on graphene provides a robust criterion correlating with experimentally observed remote-epitaxy activity. The work argues that remote epitaxy is governed by island-migration kinetics on graphene.

Abstract

Remote epitaxy is a promising growth mode in which a 2D van der Waals layer, usually graphene, is placed on a substrate before epitaxial growth. This paper uses first-principles calculations to evaluate candidate metrics for remote epitaxy viability across several substrate/film combinations. The authors find that electrostatic potential and atomic adsorption are insufficient predictors, while the sliding barrier of small islands on graphene provides a robust criterion correlating with experimentally observed remote-epitaxy activity. The work argues that remote epitaxy is governed by island-migration kinetics on graphene.

Abstract

Remote epitaxy is a promising growth mode in which a 2D van der Waals layer, usually graphene, is placed on a substrate before epitaxial growth. This paper uses first-principles calculations to evaluate candidate metrics for remote epitaxy viability across several substrate/film combinations. The authors find that electrostatic potential and atomic adsorption are insufficient predictors, while the sliding barrier of small islands on graphene provides a robust criterion correlating with experimentally observed remote-epitaxy activity. The work argues that remote epitaxy is governed by island-migration kinetics on graphene.

Abstract

Remote epitaxy is a promising growth mode in which a 2D van der Waals layer, usually graphene, is placed on a substrate before epitaxial growth. This paper uses first-principles calculations to evaluate candidate metrics for remote epitaxy viability across several substrate/film combinations. The authors find that electrostatic potential and atomic adsorption are insufficient predictors, while the sliding barrier of small islands on graphene provides a robust criterion correlating with experimentally observed remote-epitaxy activity. The work argues that remote epitaxy is governed by island-migration kinetics on graphene.