Anomalous scaling behavior and surface roughening in molecular thin-film deposition
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Centre for Electronic Materials and Devices, Department of Chemistry, Imperial College London, London SW7 2AZ (United Kingdom)
The thin film growth dynamics of a molecular semiconductor, free-base phthalocyanine (H{sub 2}Pc), deposited by organic molecular beam deposition, has been studied by atomic force microscopy (AFM) and height difference correlation function (HDCF) analysis. The measured dynamic scaling components ({alpha}{sub loc}=0.61{+-}0.12, {beta}=1.02{+-}0.08, and 1/z=0.72{+-}0.13) are consistent with rapid surface roughening and anomalous scaling behavior. A detailed analysis of AFM images and simple growth models suggest that this behavior arises from the pronounced upward growth of crystalline H{sub 2}Pc mounds during the initial stages of thin film growth.
- OSTI ID:
- 20788075
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 73, Issue 16; Other Information: DOI: 10.1103/PhysRevB.73.161305; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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