Abstract: A field effect transistor having at least a gate, source, and drain electrodes and a semiconductor channel for controlling transport of charge carriers between the source and drain electrodes, the gate being insulated from the channel by an dielectric, at least a portion of the dielectric disposed between the gate electrode and the semiconductor channel being doped or imbued with the an element which if doped or imbued into a semiconductor material would cause the semiconductor to be p-type. The p-type element used to dope or imbue the gate dielectric is preferably Mg.

Abstract: A field effect transistor having at least a gate, source, and drain electrodes and a semiconductor channel for controlling transport of charge carriers between the source and drain electrodes, the gate being insulated from the channel by an dielectric, at least a portion of the dielectric disposed between the gate electrode and the semiconductor channel being doped or imbued with the an element which if doped or imbued into a semiconductor material would cause the semiconductor to be p-type. The p-type element used to dope or imbue the gate dielectric is preferably Mg.

Abstract: A method of manufacturing a III-V semiconductor circuit; the method comprising: forming a first layer of a III-V material on a growth substrate; forming a second layer of a III-V material on the first layer of III-V material; forming a FET transistor having a source electrode and a drain electrode in contact with a top surface of the second layer of a III-V material; forming a top dielectric layer above the FET transistor; forming a metal layer above the top dielectric layer, wherein said metal layer is connected to said source electrode; attaching a handle substrate to a top surface of the metal layer; removing the growth substrate from the bottom of the first layer of a III-V material; and forming a bottom dielectric layer on the bottom of the first layer of a III-V material.

Abstract: A field effect transistor having at least a gate, source, and drain electrodes and a semiconductor channel for controlling transport of charge carriers between the source and drain electrodes, the gate being insulated from the channel by an dielectric, at least a portion of the dielectric disposed between the gate electrode and the semiconductor channel being doped or imbued with the an element which if doped or imbued into a semiconductor material would cause the semiconductor to be p-type. The p-type element used to dope or imbue the gate dielectric is preferably Mg.

Abstract: A method of manufacturing a III-V semiconductor circuit; the method comprising: forming a first layer of a III-V material on a growth substrate; forming a second layer of a III-V material on the first layer of III-V material; forming a FET transistor having a source electrode and a drain electrode in contact with a top surface of the second layer of a III-V material; forming a top dielectric layer above the FET transistor; forming a metal layer above the top dielectric layer, wherein said metal layer is connected to said source electrode; attaching a handle substrate to a top surface of the metal layer; removing the growth substrate from the bottom of the first layer of a III-V material; and forming a bottom dielectric layer on the bottom of the first layer of a III-V material.

Abstract: A method of manufacturing a III-V semiconductor circuit; the method comprising: forming a first layer of a III-V material on a growth substrate; forming a second layer of a III-V material on the first layer of III-V material; forming a FET transistor having a source electrode and a drain electrode in contact with a top surface of the second layer of a III-V material; forming a top dielectric layer above the FET transistor; forming a metal layer above the top dielectric layer, wherein said metal layer is connected to said source electrode; attaching a handle substrate to a top surface of the metal layer; removing the growth substrate from the bottom of the first layer of a III-V material; and forming a bottom dielectric layer on the bottom of the first layer of a III-V material.

Abstract: A diode includes: a semiconductor substrate; a cathode metal layer contacting a bottom of the substrate; a semiconductor drift layer on the substrate; a graded aluminum gallium nitride (AlGaN) semiconductor barrier layer on the drift layer and having a larger bandgap than the drift layer, the barrier layer having a top surface and a bottom surface between the drift layer and the top surface, the barrier layer having an increasing aluminum composition from the bottom surface to the top surface; and an anode metal layer directly contacting the top surface of the barrier layer.

Abstract: A diode includes: a semiconductor substrate; a cathode metal layer contacting a bottom of the substrate; a semiconductor drift layer on the substrate; a graded aluminum gallium nitride (AlGaN) semiconductor barrier layer on the drift layer and having a larger bandgap than the drift layer, the barrier layer having a top surface and a bottom surface between the drift layer and the top surface, the barrier layer having an increasing aluminum composition from the bottom surface to the top surface; and an anode metal layer directly contacting the top surface of the barrier layer.

Abstract: A field effect transistor having at least a gate, source, and drain electrodes and a semiconductor channel for controlling transport of charge carriers between the source and drain electrodes, the gate being insulated from the channel by an dielectric, at least a portion of the dielectric disposed between the gate electrode and the semiconductor channel being doped or imbued with the an element which if doped or imbued into a semiconductor material would cause the semiconductor to be p-type. The p-type element used to dope or imbue the gate dielectric is preferably Mg.

Abstract: A field effect transistor includes a III-Nitride channel layer, a III-Nitride doped cap layer on the channel layer, a source electrode in contact with the III-Nitride cap layer, a drain electrode in contact with the III-Nitride cap layer, a gate electrode located between the source and the drain electrodes, and a gate dielectric layer between the gate electrode and the III-Nitride undoped channel layer, wherein the cap layer is doped to provide mobile holes, and wherein the gate dielectric layer comprises a layer of AlN in contact with the channel layer.

Abstract: A diode includes: a semiconductor substrate; a cathode metal layer contacting a bottom of the substrate; a semiconductor drift layer on the substrate; a graded aluminum gallium nitride (AlGaN) semiconductor barrier layer on the drift layer and having a larger bandgap than the drift layer, the barrier layer having a top surface and a bottom surface between the drift layer and the top surface, the barrier layer having an increasing aluminum composition from the bottom surface to the top surface; and an anode metal layer directly contacting the top surface of the barrier layer.

Abstract: A field-effect transistor (FET) includes a plurality of semiconductor layers, a source electrode and a drain electrode contacting one of the semiconductor layers, a first dielectric layer on a portion of a top semiconductor surface between the source and drain electrodes, a first trench extending through the first dielectric layer and having a bottom located on a top surface or within one of the semiconductor layers, a second dielectric layer lining the first trench and covering a portion of the first dielectric layer, a third dielectric layer over the semiconductor layers, the first dielectric layer, and the second dielectric layer, a second trench extending through the third dielectric layer and having a bottom located in the first trench on the second dielectric layer and extending over a portion of the second dielectric, and a gate electrode filling the second trench.

Abstract: A field-effect transistor (FET) includes a plurality of semiconductor layers, a source electrode and a drain electrode contacting one of the semiconductor layers, a first dielectric layer on a portion of a top semiconductor surface between the source and drain electrodes, a first trench extending through the first dielectric layer and having a bottom located on a top surface or within one of the semiconductor layers, a second dielectric layer lining the first trench and covering a portion of the first dielectric layer, a third dielectric layer over the semiconductor layers, the first dielectric layer, and the second dielectric layer, a second trench extending through the third dielectric layer and having a bottom located in the first trench on the second dielectric layer and extending over a portion of the second dielectric, and a gate electrode filling the second trench.

Abstract: A method of manufacturing a III-V semiconductor circuit; the method comprising: forming a first layer of a III-V material on a growth substrate; forming a second layer of a III-V material on the first layer of III-V material; forming a FET transistor having a source electrode and a drain electrode in contact with a top surface of the second layer of a III-V material; forming a top dielectric layer above the FET transistor; forming a metal layer above the top dielectric layer, wherein said metal layer is connected to said source electrode; attaching a handle substrate to a top surface of the metal layer; removing the growth substrate from the bottom of the first layer of a III-V material; and forming a bottom dielectric layer on the bottom of the first layer of a III-V material.

Abstract: A field effect transistor (FET) having a source contact to a channel layer, a drain contact to the channel layer, and a gate contact on a barrier layer over the channel layer, the FET including a dielectric layer on the barrier layer between the source contact and the drain contact and over the gate contact, and a field plate on the dielectric layer, the field plate connected to the source contact and extending over a space between the gate contact and the drain contact and the field plate comprising a sloped sidewall in the space between the gate contact and the drain contact.