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Schematic view of the growth cell and a picture of growth electrodes. The volume of the cells is limited by parameters , , and . (a) Type C cell consists of two glass parts and clamps. The upper part is an inlet for liquid and cover. The thickness of cell is described as . Electrodes used in growth are patterned by photolithography and thermally evaporated on matching glass slides used as a bottom of the cell. (b) Cross section of the growth cell solvent fill cavity between slides and inlet tubes. As the thickness of cavity decreases, the growth space becomes two dimensional. (c) Picture of the electrodes. The large pads are used to connect wires. Electrodes have two widths; 20 and .
Current-voltage characteristics of cells and relation between electrode area and peak current (inset). Cells of semiconventional-scale electrodes, with semiconventional volume (type A) and cells of micrometer-scale electrodes, in semiconventional volume (type B) have peaks in current-voltage characterisitcs. Signal of cell B is magnified by three orders of magnitude. Electrode area against peak heights is shown in the inset. These two have roughly linear correlation in semiconventional cells (△) and in microcell (◇).
Crystals grown around electrodes. (a) A SEM image of crystals grown in a vicinity of electrodes. (b) An optical image of crystals grown. Two transverse bars are electrodes, and black needlelike crystals are grown. White bar represents for both panels.
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