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Performance Improvement of Organic Thin-Film Transistors by Solution-Processed Crystallization of Pentacene at Room Temperature

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4 Author(s)
Hung-Wei Liu ; Dept. of Electr. Eng. & Comput. Sci., Univ. of California, Irvine, CA ; Ho-Jung Chang ; Guann-Pyng Li ; Mark Bachman

Organic thin-film transistors (OTFTs) have been locally grown using solution-phase crystallization of pentacene at room temperature. For crystals grown on the surface, carrier mobility was measured to be approximately 3.0 cm2/V middot s with on/off ratios above 106. V-shape trenches in the substrate helped to localize the crystallization to within the trenches, and these devices showed similar performance to the surface-grown crystals. This letter suggests that quality OTFT devices may be manufactured using low-cost scalable techniques at room temperature.

Published in:

IEEE Electron Device Letters  (Volume:30 ,  Issue: 4 )