Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1795574 | Journal of Crystal Growth | 2008 | 5 Pages |
Abstract
The influences of substrate steps on crystallographic orientation of para-quaterphenylene (p-4P) thin films deposited on potassium chloride (KCl) (0 0 1) cleaved in ultrahigh vacuum have been studied in needle-shaped crystals preferentially nucleated at the step edges of the substrates. Surprisingly, most of the crystals nucleated on the so-called tartan zone of the KCl (0 0 1) substrate did not grow epitaxially, but became aligned in the directions of the cleaved steps, indicating the onset of grapho-epitaxy. The effects of step height and width on the nucleation and growth of p-4P crystals have been discussed.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
H. Yamamoto, H. Takahashi, N. Yano, Y. Takagishi, T. Kubo, T. Harami, H. Hondoh, T. Nakada,