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Download fileElectric-Field-Assisted Position and Orientation Control of Organic Single Crystals
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posted on 02.12.2014, 00:00 authored by Kenji Kotsuki, Seiji Obata, Koichiro SaikiWe
have investigated the motion of growing pentacene single crystals
in solution under various electric fields. The pentacene single crystals
in 1,2,4-trichlorobenzene responded to the electric field as if they
were positively charged. By optimizing the strength and frequency
of an alternating electric field, the pentacene crystals automatically
bridged the electrodes on SiO2. The pentacene crystal with
a large aspect ratio tended to direct the [1̅10] orientation
parallel to the conduction direction, which will be suitable from
a viewpoint of anisotropy in mobility. The present result shows a
possibility of controlling the position and orientation of organic
single crystals by the use of an electric field, which leads to high
throughput and low cost industrial manufacturing of the single crystal
array from solution.