摘要:
A semiconductor body comprised of a semiconductor material includes a first monocrystalline region of the semiconductor material having a first lattice constant along a reference direction, a second monocrystalline region of the semiconductor material having a second lattice constant, which is different than the first, along the reference direction, and a third, strained monocrystalline region between the first region and the second region.
摘要:
A main thyristor (1) has a recovery protection which is integrated into a drive thyristor (2) whose n-doped emitter (25) is electrically connected to a main thyristor control terminal (140). Moreover, the p-doped emitter (28) of the drive thyristor (2) is electrically connected to the p-doped emitter (18) of the main thyristor (1). Various optional measures for realizing a recovery protection are provided in this case. A method for producing a thyristor system having a main thyristor and a drive thyristor, the drive thyristor (2) having anode short circuits (211) involves introducing particles (230) into a target region (225) of the semiconductor body (200) of the drive thyristor (2), the distance between the target region (225) and a front side (201) of the semiconductor body (200) opposite to the rear side (202) being less than or equal to the distance between the p-doped emitter (28) and the front side (201).
摘要:
A thyristor includes a semiconductor body having an anode-side base zone of a first conductance type, and having a cathode-side base zone of the second, opposite conductance type, and has cathode-side and anode-side emitter zones. An anode-side defect zone is included within the anode-side base zone, in which the free charge carriers have a reduced life, with a predetermined thickness of at least 20 &mgr;m. The defect zone may be produced by anode-side irradiation of predetermined regions of the semiconductor body with charged particles, and with heat treatment of the semiconductor body in order to stabilize the defect zone.
摘要:
The effective doping profile of a finished thyristor is altered with helium ions radiated into a region provided for triggering the thyristor in such a way that the breakover voltage for overhead ignition is increased or reduced. Doping profile changes made in the cathode side half of the anode side base provide effective results, e.g. in the vicinity of the pn junction between the anode side and the cathode side base. The helium ions generate acceptor-type states that lower the effective n doping.
摘要:
A vertical semiconductor device includes a semiconductor body, and first and second contacts on opposite sides of the semiconductor body. A plurality of regions are formed in the semiconductor body including, in a direction from the first contact to the second contact, a first region of a first conductivity type, a second region of a second conductivity type; and a third region of the first conductivity type. The third region is electrically connected to the second contact. A semiconductor zone of the second conductivity type and increased doping density is arranged in the second region. The semiconductor zone separates a first part of the second region from a second part of the second region. The semiconductor zone has a maximum doping density exceeding about 1016 cm−3 and a thickness along the direction from the first contact to the second contact of less than about 3 μm.
摘要:
A vertical semiconductor device comprises a semiconductor body, a first contact and a second contact, wherein a first semiconductor region of a first conductivity type, a second semiconductor region of a second conductivity type and a third semiconductor region of a second conductivity type are formed in the semiconductor body in a direction from the first contact to the second contact, wherein a basic doping density of the second semiconductor region is smaller than a doping density of the third semiconductor region, and wherein in the second semiconductor region a semiconductor zone of the second conductivity type is arranged in which the doping density is increased relative to the basic doping density of the second semiconductor region.
摘要:
A semiconductor component includes a semiconductor body having a first side and a second side opposite the first side. In the semiconductor body, a dopant region is formed by a dopant composed of an oxygen complex. The dopant region extends over a section L having a length of at least 10 μm along a direction from the first side to the second side. The dopant region has an oxygen concentration in a range of 1×1017 cm−3 to 5×1017 cm−3 over the section L.
摘要:
A semiconductor element includes a semiconductor layer having a first doping density, a metallization, and a contact area located between the semiconductor layer and the metallization. The contact area includes at least one first semiconductor area that has a second doping density higher than the first doping density, and at least one second semiconductor area in the semiconductor layer. The second semiconductor area is in contact with the metallization and provides lower ohmic resistance to the metallization than a direct contact between the semiconductor layer and the metallization provides or would provide.
摘要:
A semiconductor element includes a semiconductor layer having a first doping density, a metallization, and a contact area located between the semiconductor layer and the metallization. The contact area includes at least one first semiconductor area that has a second doping density higher than the first doping density, and at least one second semiconductor area in the semiconductor layer. The second semiconductor area is in contact with the metallization and provides lower ohmic resistance to the metallization than a direct contact between the semiconductor layer and the metallization provides or would provide.
摘要:
A semiconductor component has a first and a second contact-making region, and a semiconductor volume arranged between the first and the second contact-making region. Within the semiconductor volume, it is possible to generate a current flow that runs from the first contact-making region to the second contact-making region, or vice versa. The semiconductor volume and/or the contact-making regions are configured in such a way that the local flow cross-section of a locally elevated current flow, which is caused by current splitting, is enlarged at least in partial regions of the semiconductor volume.