Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5350629 | Applied Surface Science | 2015 | 6 Pages |
Abstract
We analyze self-assembled nanocrystals of 3,4,9,10-perylene tetracarboxylic dianhydride (PTCDA) molecules on hydrogen passivated Ge(0 0 1) surfaces with use of scanning tunneling microscopy (STM) and spectroscopy (STS). At 0.7ML coverage, 2.1 nm high, elongated, hexagonal islands inclined at 37° with respect to the substrate row are mostly observed. By measuring the differential tunneling conductance, we observe an effect of electronic decoupling of the nanocrystals due to the introduced passivating layer. Finally, we shortly discuss the stability of the islands and their interaction with the scanning probe in the ultra-high vacuum environment.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Amir A. Ahmad Zebari, Marek Kolmer, Jakub S. Prauzner-Bechcicki,