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|Title:||Effects of annealing on device parameters of organic field effect transistors using liquid-crystalline tetrasubstituted zinc phthalocyanine|
|Keywords:||Organic thin-film transistors;Annealing;Grain boundaries|
|Publisher:||Institute of Physics Publishing|
|Citation:||EPL (Europhysics Letters), 106 (5): 58002, (2014)|
|Abstract:||The device performance of organic thin-film transistors (OTFTs) employing the solution processed films of room temperature liquid-crystalline tetrasubstituted zinc phthalocyanine derivative was found to depend upon the film morphology. Atomic force microscopic and X-Ray diffraction studies show that the annealing at 70° produced a preferentially unidirectional void-free film with improved surface smoothness. The OTFTs with the annealed films exhibited enhanced conductivity, threefold reduction in threshold voltage, a nearly one order of magnitude increase in the on/off ratio and more than one-third reduction of hysteresis in the transfer characteristics.|
|Appears in Collections:||Wolfson Centre for Materials Processing|
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