| abstract |
A field effect organic transistor includes a source electrode, a drain electrode, a gate electrode, a gate insulating layer and an organic semiconductive layer; in the field effect organic transistor, the organic semiconductive layer includes a first organic semiconductive layer forming a channel region and a second organic semiconductive layer arranged to abut the first organic semiconductive layer; the charge mobility (μ 1 ) in the first organic semiconductive layer is 10 −3 cm 2 /Vs or more; the charge mobility (μ 2 ) in the second organic semiconductive layer is 10 −4 cm 2 /Vs or less; and the ratio (μ 1 /μ 2 ) between the two organic semiconductive layers is 10 or more. |