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Nucleation and Growth of Aromatic Nitro Compound on Semi-Insulating Silicon Substrates by Organic Molecular Beam Deposition

Published online by Cambridge University Press:  02 July 2020

K.I. Seo  and
C.W. Lowe
K.I. Seo
Affiliation:
Research Center for Optical Physics, Department of Physics, Hampton University, Hampton, VA23668
C.W. Lowe
Affiliation:
Research Center for Optical Physics, Department of Physics, Hampton University, Hampton, VA23668
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Extract

From the viewpoint of variety in molecular design, organic molecules have great potential because some of them have large optical nonlinearities. Organic molecules due to a delocalized π-conjugated systems have a number of applications. Since the nitro group is one of the strongest electron-acceptor group, the noncentrosymmetric structures of MNA [2-methyl-4-nitroaniline] and MAP [methyl-(2,4-dinitrophenyl)-aminopropanoate] provide a successful approach for nonlinear optical (NLO) properties.

Heteroepitaxy has become one of the important methods in modern semiconductor technology. In this work the polymeric thin films have grown on crystalline materials by organic molecular beam deposition (OMBD) technique. This provides a highly controlled process of film growth of various organic thin films.

The behaviors of film formation and preliminary results of some properties of mixed MNA-MAP thin films are reported. A surface scientist studying organic interfaces must apply traditional surface science tools with great care. The experimental procedure is followed here in order to examine their morphological features.

Type
Recent Developments in Microscopy for Studying Electronic and Magnetic Materials
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 503 - 504
Copyright
Copyright © Microscopy Society of America 1997

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References

1.Pope, M. and Swenberg, C.E., Electronic Processes in Organic Crystal New York:Oxford University Press (1982).Google Scholar
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3.Seo, K.I., Jones, I. and Lowe, C.W., International Conference on Organic Thin Films for Photonic Applications, OSA Technical Digest Series (1995) 85.Google Scholar