Dual layer Semiconductor Devices
A semiconductor-based device includes a channel layer, which includes a distal layer and a proximal layer in contact with the distal layer. The distal layer supports at least a portion of hole conduction for at least one p-channel component, and the proximal layer supports at least a portion of electron conduction for at least one n-channel component. The proximal layer has a thickness that permits a hole wave function to effectively extend from the proximal layer into the distal layer to facilitate hole conduction by the distal layer. A method for fabricating a semiconductor-based device includes providing a distal portion of a channel layer and providing a proximal portion of the channel layer.
1. A method for fabricating a semiconductor-based device, the method comprising:
providing a distal portion of a channel layer to support hole conduction for at least one p-channel component; and
providing a proximal portion of the channel layer, the proximal portion being in contact with the distal portion and having a thickness that permits a hole wave function to effectively extend from the proximal portion into the distal portion to facilitate hole conduction by the distal layer,
wherein providing the proximal portion comprises thinning the proximal portion in a location of the at least one p-channel component to enhance the support of hole conduction.
2. The method of claim 1 , wherein thinning comprises reducing the thickness of the proximal portion in the location of the at least one p-channel component while leaving the thickness substantially unchanged in a location of at least one n-channel component.