Trap states and transport characteristics in picene thin film field-effect transistor
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概要
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Transport characteristics and trap states are investigated in picene thin film field-effect transistor under O_2 atmosphere on the basis of multiple shallow trap and release (MTR) model. The channel transport is dominated by MTR below 300 K. It has been clarified on the basis of MTR model that the O_2-exposure induces a drastic reduction in shallow trap density to increase both the field-effect mobility μ and on-off ratio. We also found that the O_2-exposure never caused an increase in hole carrier density. Actually, a very high μ value of 3.2 cm^2 V^<-1> s^<-1> is realized under 500 Torr of O_2.
- 2009-01-29
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