Order on disorder: Copper phthalocyanine thin films on technical substrates
- 1 July 2001
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 90 (1), 466-469
- https://doi.org/10.1063/1.1375017
Abstract
We have studied the molecular orientation of the commonly used organic semiconductorcopper phthalocyanine (CuPC) grown as thin films on the technically relevant substrates indiumtin oxide, oxidized Si, and polycrystalline gold using polarization-dependent x-ray absorption spectroscopy, and compare the results with those obtained from single crystalline substrates [Au(110) and GeS(001)]. Surprisingly, the 20–50 nm thick CuPC films on the technical substrates are as highly ordered as on the single crystals. Importantly, however, the molecular orientation in the two cases is radically different: the CuPC molecules stand on the technical substrates and lie on the single crystalline substrates. The reasons for this and its consequences for our understanding of the behavior of CuPC films in devices are discussed.Keywords
This publication has 18 references indexed in Scilit:
- The Influence of Steps on the Orientation of Copper Phthalocyanine Monolayers on Au(111)Langmuir, 2000
- Ordered copper phthalocyanine overlayers on InAs and InSb (100) surfacesSurface Science, 1999
- Van der Waals epitaxy for highly lattice-mismatched systemsJournal of Crystal Growth, 1999
- Schottky gate static induction transistor using copper phthalocyanine filmsThin Solid Films, 1998
- Thin and ultra-thin films of nickel phthalocyanine grown on highly oriented pyrolitic graphite: an XPS, UHV-AFM and air tapping-mode AFM studySurface Science, 1997
- Organic field-effect transistors with high mobility based on copper phthalocyanineApplied Physics Letters, 1996
- Epitaxial growth of metal phthalocyanines on hydrogen terminated vicinal surfaces of Si(111)Applied Physics Letters, 1996
- Molecular arrangement of copper phthalocyanine on hydrogen-terminated Si(111): Influence of surface roughnessJournal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, 1996
- Formation and characterization of epitaxial phthalocyanine and perylene monolayers and bilayers on Cu(100): Low-energy electron diffraction and thermal desorption mass spectrometry studiesJournal of Vacuum Science & Technology A, 1994
- Unit Cell Metastable-form Constants of Various PhthalocyaninesBulletin of the Chemical Society of Japan, 1966