Epitaxial growth of hexadecafluorozincphthalocyanine (F₁₆ZnPc) film deposited on GeS(0 0 1)

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• 作者：Eiji Kawabe ; Daisuke Yoshimura ; Kaname Kanai ; Yukio Ouchi ; Shinji Hasegawa ; Koji Kamiya Okudaira ; Nobuo Ueno ; Kazuhiko Seki
• 关键词：LEED ; NEXAFS ; ARUPS ; Molecular orientation ; Film structure ; F₁₆ZnPc ; GeS(0 0 1)
• 刊名：Surface Science
• 出版年：2008
• 出版时间：1 April 2008
• 年：2008
• 卷：602
• 期：7
• 页码：1328-1336
• 全文大小：1496 K

文摘

The molecular arrangement in the monomolecular layer (1 ML) film of hexadecafluorozincphthalocyanine (F₁₆ZnPc) vacuum-deposited on GeS(0 0 1) in ultrahigh vacuum were studied by low energy electron diffraction (LEED), near edge X-ray absorption fine structure (NEXAFS) spectroscopy, and angle-resolved ultraviolet photoelectron spectroscopy (ARUPS). From the LEED analysis, we found that the F₁₆ZnPc film grows epitaxially on the substrate surface and that the lattice structure in the 1 ML region is commensurate with the lattice of the surface. The tilt angle between the molecular plane and the substrate surface is 12.5° ± 2.5° deduced from the NEXAFS and ARUPS results. We also determined the azimuthal angle of the adsorbed F₁₆ZnPc molecule with respect to the surface orientation of GeS(0 0 1) by comparing the ARUPS spectra with the theoretical simulation. Finally, we suggested a possible full film structure.