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Title: Effects of annealing on device parameters of organic field effect transistors using liquid-crystalline tetrasubstituted zinc phthalocyanine
Authors: Faris, T
Basova, T
Chaure, NB
Sharma, AK
Durmuş, M
Ahsen, V
Ray, AK
Keywords: Organic thin-film transistors;Annealing;Grain boundaries
Issue Date: 2014
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.
ISSN: 0295-5075
Appears in Collections:Wolfson Centre for Materials Processing

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