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

Citation
S. Heutz et al., Structural templating effects in molecular heterostructures grown by organic molecular-beam deposition, APPL PHYS L, 77(24), 2000, pp. 3938-3940
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
0003-6951 → ACNP
Volume
77
Issue
24
Year of publication
2000
Pages
3938 - 3940
Database
ISI
SICI code
0003-6951(200012)77:24<3938:STEIMH>2.0.ZU;2-2
Abstract
Powder x-ray diffraction has been used to study the structural properties o f multilayered heterostructures grown by organic molecular-beam deposition and based on the molecular materials H2Pc, perylene-3, 4, 9, 10-tetracarbox ylic dianhydride (PTCDA) and Alq(3). Structural templating has been observe d for multilayers of PTCDA and H2Pc, with the first layer completely disrup ting the structure of subsequent layers. H2Pc adopts a new structure when d eposited 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 invo lving several different layers, but is attenuated by insertion of an amorph ous layer such as Alq(3). (C) 2000 American Institute of Physics. [S0003-69 51(00)02251-8].