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Solution-Processed Dual-Gate Polymer Field-Effect Transistors for Display Applications

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3 Author(s)
Tae-Jun Ha ; Univ. of Texas, Austin, TX, USA ; Sonar, P. ; Dodabalapur, A.

We describe the advantages of dual-gate thin-film transistors (TFTs) for display applications. We show that in TFTs with active semiconductor layers composed of diketopyrrolopyrrole-naphthalene copolymer, the on-current is increased, the off-current is reduced, and the sub-threshold swing is improved compared to single-gate devices. Charge transport measurements in steady-state and under non-quasi-static conditions reveal the reasons for this improved performance. We show that in dual-gate devices, a much smaller fraction of charge carriers move in slow trap states. We also compare the activation energies for charge transport in the top-gate and bottom-gate configurations.

Published in:

Display Technology, Journal of  (Volume:9 ,  Issue: 9 )

Date of Publication:

Sept. 2013

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