Physical Sciences and Mathematics Commons^™

Contact Printed Co/Insulator/Co Molecular Junctions, Xiaojuan Fan, David L. Rogow, Claudia H. Swanson, Akhilesh Tripathi, Scott R. J. Oliver

Xiaojuan Fan

The authors report the contact printing of a Au/Co double layer (total thickness ∼20–40nm) onto a self-assembled monolayer surface to form molecular junctions under ambient conditions. The feature size ranges from 50×50μm2 to 2×2 mm2. Grazing incident x-ray diffraction of the multilayer junction shows all expected Au peaks, while elemental Co was confirmed by energy dispersive spectroscopy. Film thickness, roughness, and density were characterized by x-ray reflectivity. I-V measurements show a prominent hysteresis, likely associated with charge trapping at the metal-organic interface, not an intrinsic feature of alkanedithiol molecules.