Deposition behavior onto different template structures and step-edge induced area-selective growth of rubrene: A molecular dynamics study

Molecular dynamics simulations and quantum mechanics calculation were employed to study the deposition behavior of organic luminescent molecules rubrene onto bare dioxide silicon substrate and self-assembled monolayers (SAM) patterned substrate. A mixed system was constructed to investigate the edge-induced area-selective growth. Our simulation results suggest that the functionalized SAM decoration on the substrate surface exerts significant effect on the growth behavior and crystallinity of rubrene molecules. In the mixed system, the rubrene molecules diffused and preferetially deposited along the step-edge of SAM and formed a typical π-conjugated structure by standing up-right.