摘要:
A technology capable of suppressing a fluctuation in voltage in a diode region is provided. A resistance value between the emitter electrode and the lower body region is lower than a resistance value between the anode electrode and the lower anode region when the semiconductor device operates as a diode. A quantity of holes between the emitter electrode and the second barrier region is smaller than a quantity of holes between the anode electrode and the first barrier region.
摘要:
Tunneling field-effect transistors including silicon, germanium or silicon germanium channels and III-N source regions are provided for low power operations. A broken-band heterojunction is formed by the source and channel regions of the transistors. Fabrication methods include selective anisotropic wet-etching of a silicon substrate followed by epitaxial deposition of III-N material and/or germanium implantation of the substrate followed by the epitaxial deposition of the III-N material.
摘要:
According one embodiment, a semiconductor device includes: a first electrode; a second electrode; a first semiconductor layer provided between the first electrode and the second electrode and being in contact with the first electrode; a second semiconductor layer including a first part and a second part, and the second part being contact with the first electrode, and the second semiconductor layer having an effective impurity concentration lower than an effective impurity concentration in the first semiconductor layer; a third semiconductor layer provided between the second semiconductor layer and the second electrode, and having an effective impurity concentration lower than an effective impurity concentration in the second semiconductor layer; and a fourth semiconductor layer provided between the third semiconductor layer and the second electrode, and being in contact with the second electrode.
摘要:
One illustrative method of forming a TFET device includes forming a first semiconductor material that extends for a full length of a drain region, a gate region and a source region of the device, masking the drain region while exposing at least a portion of the gate region and exposing the source region, forming a second semiconductor material above the gate region and above the source region, forming a third semiconductor material above the second semiconductor material and above the gate region and above the source region, the third semiconductor material being doped with an opposite type of dopant material than in the first semiconductor material, masking the drain region, and forming a gate structure above at least a portion of the exposed gate region.
摘要:
Tunneling field-effect transistors including silicon, germanium or silicon germanium channels and III-N source regions are provided for low power operations. A broken-band heterojunction is formed by the source and channel regions of the transistors. Fabrication methods include selective anisotropic wet-etching of a silicon substrate followed by epitaxial deposition of III-N material and/or germanium implantation of the substrate followed by the epitaxial deposition of the III-N material.
摘要:
A fin tunneling field effect transistor (TFET) is disclosed. The fin TFET includes a semiconductor body extending in a first direction on a substrate, wherein the semiconductor body constitutes a channel of the fin TFET. The fin TFET also includes a source and a drain disposed at opposite ends of the semiconductor body, wherein the source is doped with a first dopant type and the drain is doped with a second dopant type, and the first dopant type is different from the second dopant type. The fin TFET further includes a gate disposed on at least two sides of the channel, wherein a portion of the source is disposed in contact with a portion of the channel.
摘要:
A semiconductor device is disclosed. One embodiment provides a cell area and a junction termination area at a first side of a semiconductor zone of a first conductivity type. At least one first region of a second conductivity type is formed at a second side of the semiconductor zone. The at least one first region is opposed to the cell area region. At least one second region of the second conductivity type is formed at the second side of the semiconductor zone. The at least one second region is opposed to the cell area region and has a lateral dimension smaller than the at least first region.
摘要:
In an embodiment, a semiconductor device is provided. The semiconductor device may include a substrate having a main processing surface, a first source/drain region comprising a first material of a first conductivity type, a second source/drain region comprising a second material of a second conductivity type, wherein the second conductivity type is different from the first conductivity type, a body region electrically coupled between the first source/drain region and the second source/drain region, wherein the body region extends deeper into the substrate than the first source/drain region in a first direction that is perpendicular to the main processing surface of the substrate, a gate dielectric disposed over the body region, and a gate region disposed over the gate dielectric, wherein the gate region overlaps with at least a part of the first source/drain region and with a part of the body region in the first direction.
摘要:
In an embodiment, a semiconductor device is provided. The semiconductor device may include a substrate having a main processing surface, a first source/drain region comprising a first material of a first conductivity type, a second source/drain region comprising a second material of a second conductivity type, wherein the second conductivity type is different from the first conductivity type, a body region electrically coupled between the first source/drain region and the second source/drain region, wherein the body region extends deeper into the substrate than the first source/drain region in a first direction that is perpendicular to the main processing surface of the substrate, a gate dielectric disposed over the body region, and a gate region disposed over the gate dielectric, wherein the gate region overlaps with at least a part of the first source/drain region and with a part of the body region in the first direction.
摘要:
A semiconductor device includes: an N-type drift layer; a P-type anode layer on the N-type drift layer; a trench penetrating the P-type anode layer; a conductive substance embedded in the trench via an insulating film; and an N-type buffer layer between the N-type drift layer and the P-type anode layer and having impurity concentration which is higher than that of the N-type drift layer.