Article comprising a thin film transistor with low conductivity

Details Article comprising a thin film transistor with low conductivity Article comprising a thin film transistor with low conductivity

1994-12-09

1996-11-12

Saadat, Mahshid

Active solid-state devices (e.g., transistors, solid-state diode

Organic semiconductor material

257289, 257347, 257410, 257642, H01L 3524, H01L 5100, H01L 2976, H01L 2701

Patent

active

055742912

ABSTRACT:
Organic thin film transistors having improved properties (e.g., on/off ratio>10.sup.5 at 20.degree. C.) are disclosed. The improved transistors comprise an organic active layer of low conductivity (<5.times.10.sup.-8 S/cm at 20.degree. C., preferably less than 10.sup.-8 or even 10.sup.-9 S/cm). A method of producing such materials is disclosed. Rapid thermal annealing was found to have beneficial results. An exemplary and preferred material is .alpha.-hexathienylene (.alpha.-6T). The improved transistors are expected to find use for, e.g., active liquid crystal displays and for memories.

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