Epitaxial integration of single crystal C60

Single crystal thin films of (111) oriented C60 are grown on epitaxial layers of single crystal antimony. The C60/Sb epitaxy is confirmed by low-energy electron diffraction which indicates that the [11̄0] in-plane directions are parallel in the two layers. X-ray diffraction shows that the C60 film is entirely (111) oriented and of high quality with sharp Bragg peaks and narrow mosaic spread. In this study the Sb films were grown on GaSb, to which they are lattice matched; however, since Sb can be epitaxially grown on surfaces with a large lattice mismatch this technique may be applied to integrate C60 single crystals onto many substrates or devices with a surface having sixfold symmetry.