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2003 Fiscal Year Final Research Report Summary

PEEM imaging of the growth of organic thin films and diffusion of molecules on topological surfaces

Research Project

Project/Area Number 13450005
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied materials science/Crystal engineering
Research InstitutionChiba University

Principal Investigator

UENO Nobuo  Chiba University, Faculty of Engineering, Professor, 工学部, 教授 (40111413)

Co-Investigator(Kenkyū-buntansha) KERA Satoshi  Okazaki National Research Institutes, Institute for Molecular Science, Research Associate, 分子科学研究所, 助手 (10334202)
OKUDAIRA Koji  Chiba University, Graduate School and Technology, Associate Professor, 大学院・自然科学研究科, 助教授 (50202023)
Project Period (FY) 2001 – 2003
KeywordsPEEM / Organic thin films / Organic devises / organic / metal interfaces / Surface diffusion
Research Abstract

A combined metastable electron emission microscopy (MEEM) and photoelectron emission microscopy (PEEM) study has been performed for copper phthalocyanine (CuPc) thin films vacuum deposited on Si(100) with a lithographic SiO_2 pattern. The MEEM image of SiO_2 pattern edges changed considerably upon deposition of very small amount of CuPc on the SiO_2/Si(100) substrate, whereas no such changes could be seen in PEEM images. The different contrast features in MEEM and PEEM can be the result of different surface sensitivities of these microscopy. The MEEM contrast characteristic for the pattern edge after the CuPc deposition may originate from the difference of the molecular orientation of CuPc which cannot be observed by PEEM. Furthermore, an unusual triangle image was observed by PEEM when a square-shaped microstructure of indium metal was deposited on a thin film of perylene-3,4,9,10-tetracarboxilicdianhydride (PTCDA) grown semi-epitaxially on a cleaved MoS_2 surface. The formation of the triangle pattern demonstrates the anisotropic surface diffusion of indium atoms on the PTCDA/MoS_2 system. The three-hold diffusion directions, which give the triangle structure, correspond excellently with the three equivalent surface crystal axes of the MoS_2 substrate. When In atoms were directly deposited on MoS_2, such diffusion was not observed, suggesting that the phenomenon is related to strong chemical interaction between In atoms and oriented PTCDA molecules.

  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] M.Onoue: "Growth of copper-phthalocyanine thin films on structured SiO_2/Si(100) surfaces studied by MEEM and PEEM"Jpn.J.Appl.Phys.. 42Part 1, No.6A. 3588-3592 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Onoue: "Evidence of anisotropic diffusion of indium atoms on a surface of perylene-3,4,9,10-tetracarboxilicdianhydride/MoS_2 system observed by photoelectron emission microscopy (PEEM)."Jpn.J.Appl.Phys.. 42. L1465-L1468 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Onoue: "PEEM and SEM studies of In/PTCDA/MoS2 system : An evidence of anisotropic surface diffusion of In atoms"J.Electron spec.& Relat.Phenom.. (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Yasufuku: "PEEM and MEEM of Chloroaluminum Phthalocyanine Ultrathin film on MoS_2"J.Electron Spectrosc.Relat.Phenom.. 114-116. 1025-1030 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Yasufuku: "Surface images of SiO_2/Si(100) pattern using electron emission microscope with metastable atoms, photons and low-energy electrons"Jpn.J.Appl.Phys.. 40. 2447 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Yasufuku: "Diffusion of chloroaluminum phthalocyanine on MoS_2 surface detected by photoemission electron microscopy and metastable electron emission microscopy"J.Appl.Phys.. 90. 209-212 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Onoue: "Growth of copper-phthalocyanine thin films on structured SiO_2/Si(100) surfaces studied by MEEM and PEEM"Jpn.J.Appl.Phys.. 42, Part 1, No.6A. 3588-3592 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Onoue: "Evidence of anisotropic diffusion of indium atoms on a surface of perylene-3,4,9,10-tetracarboxilicdianhydride/MoS_2 system observed by photoelectron emission microscopy (PEEM)."Jpn.J.Appl.Phys.. 42. L1465-L1468 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Onoue: "PEEM and SEM studies of In/PTCDA/MoS2 system : An evidence of anisotropic surface diffusion of In atoms"J.Electron spec.& Relat.Phenom.. (in press). (2004)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2005-04-19  

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