| 摘要 |
PROBLEM TO BE SOLVED: To improve the on/off ratio of source/drain currents by selecting an organic material from organic substancesα-nT or a group constituted of derivatives thereof, and allowing the organic material to have a specified electrical conductivity at a constant temperature. SOLUTION: A transistor 20 is constituted of a substrate 11, source electrode 12 being a first contact, drain electrode 13 being a second contact, gate electrode 14 being a third contact, gate dielectric 15, and active layer 16 of an organic material. The organic material is a material calledα-nT made of a carbon isotope other than a certain type of carbon or diamond combined with another element, where (n) is ranging from 4 to 9, and is selected from a group having a substitutional group on the fourth or fifth carbon of a terminating circle. Also, the organic layer is constituted of a material having a conductivity of 5×10<-8> S/cm at the most at a temperature of 20 deg.C after deposition or rapid thermal anneal. In a materialα-6T ((n) is 6), the electrical conductivity can be reduced and the on/off ratio of the source/drain currents can be improved.
|
