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Breaking down and reconstruction of islands during the film growth of CuPc on HOPG
- Source :
- Applied Physics Letters. 114:241602
- Publication Year :
- 2019
- Publisher :
- AIP Publishing, 2019.
-
Abstract
- We have observed breaking down and reconstruction of islands in the film growth of a copper phthalocyanine (CuPc) film on highly ordered pyrolytic graphite using photoelectron spectroscopy (PES) and atomic force microscopy (AFM). At the initial deposition of CuPc, the film adopts the Stranski-Krastanov mode and the islands increase normally with the nominate film thickness. At a critical thickness around 6 nm, the islands break down suddenly into small clusters. Further deposition drives the reunion of clusters to form large islands again and makes the film coverage smaller at a nominate thickness of 13 nm. The nonmonotonic PES data and AFM morphology confirmed the re-exposure of the substrate and the first layer CuPc during the island reconstruction process. This nonmonotonic growth behavior may exist widely in many anisotropic molecular film growth processes where the thin film phases are confined or restricted by the symmetry of the substrate and different from their bulk phases.
- Subjects :
- 010302 applied physics
Materials science
Physics and Astronomy (miscellaneous)
Condensed matter physics
02 engineering and technology
Substrate (electronics)
021001 nanoscience & nanotechnology
01 natural sciences
X-ray photoelectron spectroscopy
0103 physical sciences
Molecular film
Pyrolytic carbon
Thin film
0210 nano-technology
Anisotropy
Layer (electronics)
Deposition (law)
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 114
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........832e675591d591e1ff510d01476f0c75