...es to junction transistors, but researchers were unable to build practical FETs, largely due to the troublesome surface state barrier that prevented the ex ...d circuit]] chip. The following year, they collected all previous works on FETs and gave a theory of operation of the MOSFET.<ref>{{cite book | authors=Dav

...ETs are devices with three terminals: ''source'', ''gate'', and ''drain''. FETs control the flow of current by the application of a voltage to the gate, wh ...transistors''' since they involve single-carrier-type operation. That is, FETs use [[electron]]s or [[hole (semiconductor)|hole]]s as [[charge carrier]]s