2-STEP EPITAXIAL-GROWTH OF VANADYL-PHTHALOCYANINE ON ALKALI-HALIDE SUBSTRATES

Two-step epitaxial growth was observed in the molecular beam epitaxy g rowth of vanadyl-phthalocyanine molecules on KCl substrates. Ar the fi rst stage, tetragonal domains of the (root 10 x root 10) R +/- 27 degr ees type lattice grow two dimensionally. The nucleation and three-dime nsional growth of the monoclinic islands start subsequently after the precedent tetragonal domains cover almost the whole substrate. The ori entation of the islands is also the (root 10 x root 10) R +/- 27 degre es type, indicating that the orientation is dominated by that of the p recedent tetragonal domains.