Origin of the Mosaicity in Graphene Grown on Cu(111)

Details Origin of the Mosaicity in Graphene Grown on Cu(111) Origin of the Mosaicity in Graphene Grown on Cu(111)

2011-07-10

arxiv.org/abs/1107.1909v2

Physical Review B 84, 155425 (2011)

Physics

Condensed Matter

Materials Science

Article revised following reviewer comments

Scientific paper

10.1103/PhysRevB.84.155425

We use low-energy electron microscopy to investigate how graphene grows on Cu(111). Graphene islands first nucleate at substrate defects such as step bunches and impurities. A considerable fraction of these islands can be rotationally misaligned with the substrate, generating grain boundaries upon interisland impingement. New rotational boundaries are also generated as graphene grows across substrate step bunches. Thus, rougher substrates lead to higher degrees of mosaicity than do flatter substrates. Increasing the growth temperature improves crystallographic alignment. We demonstrate that graphene growth on Cu(111) is surface diffusion limited by comparing simulations of the time evolution of island shapes with experiments. Islands are dendritic with distinct lobes, but unlike the polycrystalline, four-lobed islands observed on (100)-textured Cu foils, each island can be a single crystal. Thus, epitaxial graphene on smooth, clean Cu(111) has fewer structural defects than it does on Cu(100).

Affiliated with

Also associated with

No associations

Rating

Origin of the Mosaicity in Graphene Grown on Cu(111) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Origin of the Mosaicity in Graphene Grown on Cu(111), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Origin of the Mosaicity in Graphene Grown on Cu(111) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-137084