TITLE

Structural templating effects in molecular heterostructures grown by organic molecular-beam deposition

AUTHOR(S)
Heutz, S.; Cloots, R.; Jones, T. S.; Jones, T.S.
PUB. DATE
December 2000
SOURCE
Applied Physics Letters;12/11/2000, Vol. 77 Issue 24
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Powder x-ray diffraction has been used to study the structural properties of multilayered heterostructures grown by organic molecular-beam deposition and based on the molecular materials H[sub 2]Pc, perylene-3, 4, 9, 10-tetracarboxylic dianhydride (PTCDA) and Alq[sub 3]. Structural templating has been observed for multilayers of PTCDA and H[sub 2]Pc, with the first layer completely disrupting the structure of subsequent layers. H[sub 2]Pc adopts a new structure when deposited on PTCDA, in which the molecular plane is oriented parallel to the substrate and this configuration is retained for film thicknesses >380 nm. The templating effect extends through molecular thin-film structures involving several different layers, but is attenuated by insertion of an amorphous layer such as Alq[sub 3]. © 2000 American Institute of Physics.
ACCESSION #
4413665

 

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