POLYACETYLENE METAL-SEMICONDUCTOR FIELD-EFFECT TRANSISTORS

Planar and sandwich types of polyacetylene metal-semiconductor field-effect transistors (MESFETs) have been fabricated. The current-vs-voltage (I-V) characteristics show that both types of MESFETs are depletion-mode transistors with low transconductances of about 10(-6)-10(-7) s. Channel modulation has been observed in both types of transistors; however, pinch-off cannot be found even at the drain voltage of up to about -30 V. The performances of both types of MESFETs have been compared and the effects on the performance of the transistor have been discussed.