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Charge carrier velocity distributions in high mobility polymer field-effect transistors

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3 Author(s)
Ha, Tae-Jun ; Microelectronics Research Center, The University of Texas at Austin, Austin, Texas 78758, USA ; Sonar, Prashant ; Dodabalapur, Ananth

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In this letter, the velocity distributions of charge carriers in high-mobility polymer thin-film transistors (TFTs) with a diketopyrrolopyrrole-naphthalene copolymer (PDPP-TNT) semiconductor active layer are reported. The velocity distributions are found to be strongly dependent on measurement temperatures as well as annealing conditions. Considerable inhomogeneity is evident at low measurement temperatures and for low annealing temperatures. Such transient transport measurements can provide additional information about charge carrier transport in TFTs which are unavailable using steady-state transport measurements.

Published in:

Applied Physics Letters  (Volume:100 ,  Issue: 15 )