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Growth of iron phthalocyanine nanoweb and nanobrush using molecular beam epitaxy

Debnath, A. K.; Samanta, S.; Singh, Ajay; Aswal, D. K.; Gupta, S. K.; Yakhmi, J. V.; Deshpande, S. K.; Poswal, A. K.; Sürgers, Christoph ORCID iD icon 1,2
1 Physikalisches Institut (PHI), Karlsruher Institut für Technologie (KIT)
2 Center for Functional Nanostructures (CFN), Karlsruher Institut für Technologie (KIT)


We present a detailed study on the growth and characterization of iron phthalocyanine (FePc) nanostructures using molecular beam epitaxy. FePc films of nominal thickness varying between 30 and 500 nm have been deposited as a function of substrate temperature (25-300 degrees C) and deposition rate (0.02-0.07 nm/s). Several interesting results have been observed. (1) For a growth temperature up to 200 degrees C, FePc grows in a-phase; while at growth temperatures > 200 degrees C formation of P-phase also takes place. (2) Film thickness has a profound influence on the morphology: for thickness <= 60nm well-defined nanorods with crystallographic a-axis orientated normal to the substrate plane are formed, while for higher thicknesses a-axis oriented nanarods coalescence to each other which results in the random grain growth. (3) The morphology of a 60 nm a-phase film, at a growth temperature of 200 degrees C, can be tuned from nanobrush (nearly parallel nanorods aligned normal to the substrate plane) to nanoweb (nanowires forming a web-like structure in the plane of the substrate) by changing the deposition rate from 0.02 to 0.07nm/s. ... mehr

DOI: 10.1016/j.physe.2008.06.022
Zitationen: 40
Zitationen: 33
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2008
Sprache Englisch
Identifikator ISSN: 1386-9477
KITopen-ID: 1000050498
Erschienen in Physica E: Low-dimensional Systems and Nanostructures
Verlag North-Holland Publishing
Band 41
Heft 1
Seiten 154-163
Nachgewiesen in Dimensions
Web of Science
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