Patent ID: 9136363
Filing Date: 2015-09-15
Classification: H01L

Abstract:
1. A compound tunneling field effect transistor comprising: a silicon substrate; a source region formed of a first semiconductor material having a lattice constant difference with silicon 5% or less, a bandgap at least 0.4 electron volts (eV) narrower than that of silicon and a first conductive type on the silicon substrate; a channel region formed of a second semiconductor material having a lattice constant difference with the first semiconductor material 2% or less, a bandgap wider than that of the first semiconductor material and electron mobility at least 5 times higher than that of silicon on the source region; a drain region formed of a third semiconductor material having a lattice constant difference with the second semiconductor material 1% or less, a bandgap wider than or equal to that of the second semiconductor material and a second conductive type opposite to the first conductive type on the channel region; a gate dielectric layer formed on a sidewall of the channel region; and a gate electrode formed on the gate dielectric layer, wherein a vertical channel is further included.