Journal
CHEMISTRY OF MATERIALS
Volume 12, Issue 8, Pages 2353-2362Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm000353x
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Amorphous or polycrystalline films of three organic materials (solvent blue 35 and two porphyrins) have been recrystallized into single-crystal thin films (of micrometer thickness) by a zone-melting technique, in which an electrically heated wire generated a narrow molten zone (0.5-2 mm wide) on the organic layer sandwiched between two pieces of glass or indium-tin oxide-coated glass. When the molten zone was moved slowly (3-120 mu m/min) across the layer from one end of the cell to the other, a single-crystal film was produced after a single pass. After this treatment, the steady-state short-circuit photocurrent was improved by several orders of magnitude.
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