摘要:
A semiconductor apparatus includes a substrate, a semiconductor layer formed above the substrate and including a nitride semiconductor, an electrode formed above the semiconductor layer and including gold, a barrier film formed above the electrode and a protection film formed above the semiconductor layer and including one of a silicon oxide film, a silicon nitride film, and a silicon oxynitride film. The protection film is formed on the barrier film. The barrier film includes a metal oxide material, a metal nitride film, or a metal oxynitride film.
摘要:
A semiconductor apparatus includes a first semiconductor layer formed on a substrate, a second semiconductor layer formed on the first semiconductor layer, a gate recess formed by removing at least a portion of the second semiconductor layer, an insulation film formed on the gate recess and the second semiconductor layer, a gate electrode formed on the gate recess via the insulation film, source and drain electrodes formed on one of the first and the second semiconductor layers, and a fluorine containing region formed in at least one of a part of the first semiconductor layer corresponding to a region in which the gate recess is formed and a part of the second semiconductor layer corresponding to the region in which the gate recess is formed.
摘要:
An HEMT includes, on an SiC substrate, a compound semiconductor layer, a silicon nitride (SiN) protective film having an opening and covering the compound semiconductor layer, and a gate electrode formed on the compound semiconductor layer so as to plug the opening. In the protective film, a projecting portion projecting from a side surface of the opening is formed at a lower layer portion 6a.
摘要:
At least one kind of impurity selected from, for example, Fe, C, B, Ti, Cr is introduced into at least a buffer layer of a compound semiconductor layered structure from a rear surface of the compound semiconductor layered structure to make a resistance value of the buffer layer high.
摘要:
A semiconductor apparatus includes a substrate, a semiconductor layer formed above the substrate and including a nitride semiconductor, an electrode formed above the semiconductor layer and including gold, a barrier film formed above the electrode and a protection film formed above the semiconductor layer and including one of a silicon oxide film, a silicon nitride film, and a silicon oxynitride film. The protection film is formed on the barrier film. The barrier film includes a metal oxide material, a metal nitride film, or a metal oxynitride film.
摘要:
A semiconductor device includes: a semiconductor layer formed over a substrate; an insulating film formed over the semiconductor layer; and an electrode formed over the insulating film, wherein the insulating film includes an amorphous film including carbon.
摘要:
A semiconductor apparatus includes a first semiconductor layer formed on a substrate, a second semiconductor layer formed on the first semiconductor layer, a gate recess formed by removing at least a portion of the second semiconductor layer, an insulation film formed on the gate recess and the second semiconductor layer, a gate electrode formed on the gate recess via the insulation film, source and drain electrodes formed on one of the first and the second semiconductor layers, and a fluorine containing region formed in at least one of a part of the first semiconductor layer corresponding to a region in which the gate recess is formed and a part of the second semiconductor layer corresponding to the region in which the gate recess is formed.
摘要:
On a surface of a compound semiconductor layer including inner wall surfaces of an electrode trench, an etching residue 12a and an altered substance 12b which are produced due to dry etching for forming the electrode trench are removed, and a compound semiconductor is terminated with fluorine. Gate metal is buried in the electrode trench via a gate insulating film, or the gate metal is directly buried in the electrode trench, whereby a gate electrode is formed.
摘要:
A semiconductor device includes a first semiconductor layer formed over a substrate, a second semiconductor layer formed over the first semiconductor layer, a source electrode and a drain electrode formed over the second semiconductor layer, an insulating film formed over the second semiconductor layer, a gate electrode formed over the insulating film, and a protection film covering the insulating film, the protection film being formed by thermal CVD, thermal ALD, or vacuum vapor deposition.
摘要:
A compound semiconductor device includes a carrier transit layer formed over a substrate; a carrier supply layer formed over the carrier transit layer; a first metal film and a second metal film formed over the carrier supply layer; a first Al comprising film formed over the first metal film; a second Al comprising film formed over the second metal film; a first Au comprising film formed over the first metal film and is free of direct contact with the first Al comprising film; a second Au comprising film formed over the second metal film and free of direct contact with the second Al comprising film; and a gate electrode that is located over the carrier supply layer between the first metal film and the second metal film.