| Abstract
| - Two efficient approaches to assembling organic semiconducting single crystals are described. The methods relyon solvent wetting and dewetting on substrates with patterned wettability to selectively direct the deposition or removalof organic crystals. Substrates were functionalized with different self-assembled monolayers (SAMs) to achieve thedesired wettabilities. The assembly of different organic crystals over centimeter-squared areas on Au, SiO2, andflexible plastic substrates was demonstrated. By designing line features on the substrate, the alignment of crystals,such as CuPc needles, was also achieved. As a demonstration of the potential application of this assembly approach,arrays of single-crystal organic field-effect transistors were fabricated by patterning organic single crystals directlyonto and between transistor source and drain electrodes.
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