| AVS 61st International Symposium & Exhibition | |
| Surface Science | Thursday Sessions |
| Session SS+TF-ThM |
| Session: | Organic Layers on Surfaces |
| Presenter: | Taylor Stock, University of Toronto, Canada |
| Authors: | T.J.Z. Stock, University of Toronto, Canada J. Nogami, University of Toronto, Canada |
| Correspondent: | Click to Email |
CuPc:C60 composite films of various compositions and thicknesses grown on the Cu(111) surface have been studied using room temperature scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). At coverages below two monolayers (ML), phase segregated, ordered films, or well mixed, disordered films can be produced depending on the particular deposition sequence. This compositional variability is achieved by exploiting the differences in the relative strengths of the various molecule-substrate and molecule-molecule interaction forces. In thicker films, the CuPc-C60 intermolecular interaction dominates the growth, and for a range of concentrations these films are found to be well mixed, amorphous and thermally stable. These results provide a rationale for improvements that have been seen for organic light emitting diode (OLED) performance associated with C60 doping of CuPc molecular layers. [1]
[1] Y. Y. Yuan, S. Han, D. Grozea, and Z. H. Lu, Appl. Phys. Lett. 88, 093503 (2006).