Thick single crystalline vanadyl phthalocyanine film epitaxially grown on KBr crystal by molecular beam epitaxy

Structural analyses are reported of ∼ 5 μm thick VOPc films grown on a KBr(001) surface by the MBE technique. The crystal is monoclinic with lattice parameters a = 14.2 Å, b = 13.1 Å, c = 12.7 Å and β = 103.2°. The orientation of the unit cell is influenced by the crystal lattice of the substrate even in this thickness range: The projections of the a-and b-axes of VOPc onto the (001) plane of KBr coincide with the [110] directions of KBr. Four kinds of crystal orientations were observed in pole figure measurements.