Volume 106, Number 5, June 2014
|Number of page(s)||6|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||04 June 2014|
Effects of annealing on device parameters of organic field effect transistors using liquid-crystalline tetrasubstituted zinc phthalocyanine
1 The Wolfson Centre for Materials Processing, Brunel University - Uxbridge, Middlesex UB8 3PH, UK
2 Nikolaev Institute of Inorganic Chemistry - Lavrentiev pr., 3, Novosibirsk 630090, Russia
3 Novosibirsk State University - Pirogova Str. 2, Novosibirsk 630090, Russia
4 Department of Physics, University of Pune - Ganeshkhind, Pune 411007, India
5 Space Vehicles Directorate, Air Force Research Laboratory - 3550 Aberdeen Avenue, SE Kirtland AFB, NM 87117, USA
6 Gebze Institute of Technology, Department of Chemistry - P.O. Box: 141, 41400, Gebze, Kocaeli, Turkey
Received: 17 February 2014
Accepted: 13 May 2014
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 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.
PACS: 81.05.Fb – Organic semiconductors / 85.30.Tv – Field effect devices / 85.30.De – Semiconductor-device characterization, design, and modeling
© EPLA, 2014
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.