Paper
15 October 2012 Solution-phase growth of organic single-crystal arrays
Osamu Goto, Shigetaka Tomiya, Yosuke Murakami, Akira Shinozaki, Akira Toda, Jiro Kasahara, Daisuke Hobara
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Abstract
We have successfully developed a method for directly forming organic single-crystal thin films at designated locations on a substrate by solution-phase growth. An original micropattern, in which small rectangular regions were connected to a large rectangular region, was designed. The small regions and the large region were used as nucleation control regions (NCRs) and a growth control region (GCR), respectively. The key to success was to vary local supersaturation of a solution droplet by making a large difference in solvent evaporation between a NCR and a GCR. We found that the NCR played a very important role in forming a single nucleus and in investigating the possibility of control of the crystal orientation. By using the developed micropattern and controlling the solvent vapor pressure during growth, we fabricated single-crystal arrays of a stable organic semiconductor, 3,9-bis(4-ethylphenyl)-peri-xanthenoxanthene (C2Ph-PXX).
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Osamu Goto, Shigetaka Tomiya, Yosuke Murakami, Akira Shinozaki, Akira Toda, Jiro Kasahara, and Daisuke Hobara "Solution-phase growth of organic single-crystal arrays", Proc. SPIE 8478, Organic Field-Effect Transistors XI, 84780C (15 October 2012); https://doi.org/10.1117/12.943223
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KEYWORDS
Thin films

Crystals

Transmission electron microscopy

Organic semiconductors

Computational fluid dynamics

Computer simulations

Diffraction

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