کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5426057 | 1395874 | 2007 | 4 صفحه PDF | دانلود رایگان |
Morphology of high-vacuum deposited rubrene thin films on the annealed (0Â 0Â 0Â 1) vicinal sapphire surfaces was studied by atomic force microscopy in non-contact mode. Atomic force microscopy images of rubrene thin films indicate that a regular array of steps on the sapphire surface acts as a template for the growth of the arrays of rubrene nanosize wires. To further demonstrate that morphological features of a substrate are crucial in determining the morphology of rubrene layers we have grown rubrene on the sapphire surfaces that were characterized by the terrace-and-step morphology with islands. We have found preferential nucleation of rubrene molecules at the intersection between a terrace and a step, as well as around the islands located on terraces.
Journal: Surface Science - Volume 601, Issue 5, 1 March 2007, Pages L25-L28