Positioning and joining of organic single-crystalline wires

• DOI: 10.1038/ncomms7737
• Publication Date: 2015-03-27T10:00:51Z
• Authors: Yuchen Wu; Jiangang Feng; Xiangyu Jiang; Zhen Zhang; Xuedong Wang; Bin Su; Lei Jiang
• Keywords: Pillar; Crystal (programming language)

Abstract Organic single-crystal, one-dimensional materials can effectively carry charges and/or excitons due to their highly ordered molecule packing, minimized defects and eliminated grain boundaries. Controlling the alignment/position of organic single-crystal architectures would allow on-demand photon/electron transport, which is a prerequisite in waveguides other optoelectronic applications. Here we report guided physical vapour transport technique control growth, alignment positioning wires with guidance pillar-structured substrates. Submicrometre-wide, hundreds micrometres long, aligned, wire arrays are generated. Furthermore, these be joined within controlled angles by varying pillar geometries. Owing controllable growth architectures, present proof-of-principle demonstrations utilizing optical waveguide through small radii curvature (internal ~90–120°). Our methodology may open route potential applications optoelectronics.