2006 年 33 巻 4 号 p. 235-
The growth of pentacene (Pn) thin film crystals on a H-Si(111) surface was observed in situ by low-energy electron microscopy. We succeeded in visualizing not only the morphology of the thin film crystals but also their polycrystalline multi-domain structures. We determined the epitaxial structures of Pn/H-Si(111). We found that there were two types of epitaxial relations. The two kinds of epitaxial relations have almost same molecular packing, but their angular relations with a H-Si(111) surface are different.