摘要:
An improved ohmic contact for a nitride-based semiconductor device is provided. In particular, a semiconductor device and method of manufacturing the semiconductor device are provided in which a semiconductor structure has an ohmic contact that includes a contact layer and a metal layer thereon. The contact layer includes at least Aluminum (Al) and Indium (In), and can further include Gallium (Ga) and/or Nitrogen (N). The molar fraction of Al and/or In can be increased/decreased within the contact layer.
摘要:
A semiconductor structure having a textured nitride-based layer. The textured nitride-based layer can be formed above one or more crystalline nitride layers and a substrate, and can be formed into any desired pattern. The semiconductor structure can be incorporated as part of, for example, a field effect transistor, a light emitting diode, or a laser.
摘要:
A semiconductor sensing device in which a sensing layer is exposed to a medium being tested in an area below and/or adjacent to a contact. In one embodiment, the device comprises a field effect transistor in which the sensing layer is disposed below a gate contact. The sensing layer is exposed to the medium by one or more perforations that are included in the gate contact and/or one or more layers disposed above the sensing layer. The sensing layer can comprise a dielectric layer, a semiconductor layer, or the like.
摘要:
A semiconductor device including a low conducting field-controlling element is provided. The device can include a semiconductor including an active region, and a set of contacts to the active region. The field-controlling element can be coupled to one or more of the contacts in the set of contacts. The field-controlling element can be formed of a low conducting layer having a sheet resistance between approximately 103 Ohms per square and approximately 107 Ohms per square. During direct current and/or low frequency operation, the field-controlling element can behave similar to a metal electrode. However, during high frequency operation, the field-controlling element can behave similar to an insulator.
摘要:
A field effect transistor (FET) including a monolithically integrated gate control circuit element can be included in, for example, a radio frequency switch circuit. For example, the FET can be included as a series and/or shunt FET of a radio frequency coplanar waveguide circuit. The widths of the series and shunt FETs of a switch circuit can be selected to provide a target isolation and/or a target insertion loss for a target operating frequency.
摘要:
A group III nitride-based transistor capable of achieving terahertz-range cutoff and maximum frequencies of operation at relatively high drain voltages is provided. In an embodiment, two additional independently biased electrodes are used to control the electric field and space-charge close to the gate edges.
摘要:
An improved light emitting heterostructure is provided. The heterostructure includes an active region having a set of barrier layers and a set of quantum wells, each of which is adjoined by a barrier layer. The quantum wells have a delta doped p-type sub-layer located therein, which results in a change of the band structure of the quantum well. The change can reduce the effects of polarization in the quantum wells, which can provide improved light emission from the active region.
摘要:
Nitride-based film is grown using multiple precursor fluxes. Each precursor flux is pulsed one or more times to add a desired element to the nitride-based film at a desired time. The quantity, duration, timing, and/or shape of the pulses is customized for each element to assist in generating a high quality nitride-based film.
摘要:
An ohmic contact to a semiconductor layer including a heterostructure barrier layer and a metal layer adjacent to the heterostructure barrier layer is provided. The heterostructure barrier layer can form a two dimensional free carrier gas for the contact at a heterointerface of the heterostructure barrier layer and the semiconductor layer. The metal layer is configured to form a contact with the two dimensional free carrier gas.
摘要:
A solution for protecting an electronic device from an electrical surge using a mounting structure is provided. In particular, the mounting structure comprises a conductive material and is electrically connected to the protected electrical device. The conductive material and/or mounting structure can have one or more properties that prevent the mounting structure from adversely impacting operation of the electronic device during normal operation, but enables the mounting structure to provide an alternative electrical path during the electrical surge.