H01L21/228

Non-planar III-V field effect transistors with conformal metal gate electrode and nitrogen doping of gate dielectric interface

A high-k gate dielectric interface with a group III-V semiconductor surface of a non-planar transistor channel region is non-directionally doped with nitrogen. In nanowire embodiments, a non-directional nitrogen doping of a high-k gate dielectric interface is performed before or concurrently with a conformal gate electrode deposition through exposure of the gate dielectric to liquid, vapor, gaseous, plasma, or solid state sources of nitrogen. In embodiments, a gate electrode metal is conformally deposited over the gate dielectric and an anneal is performed to uniformly accumulate nitrogen within the gate dielectric along the non-planar III-V semiconductor interface.

Non-planar III-V field effect transistors with conformal metal gate electrode and nitrogen doping of gate dielectric interface

A high-k gate dielectric interface with a group III-V semiconductor surface of a non-planar transistor channel region is non-directionally doped with nitrogen. In nanowire embodiments, a non-directional nitrogen doping of a high-k gate dielectric interface is performed before or concurrently with a conformal gate electrode deposition through exposure of the gate dielectric to liquid, vapor, gaseous, plasma, or solid state sources of nitrogen. In embodiments, a gate electrode metal is conformally deposited over the gate dielectric and an anneal is performed to uniformly accumulate nitrogen within the gate dielectric along the non-planar III-V semiconductor interface.

SILICON-ON-INSULATOR SUBSTRATE INCLUDING TRAP-RICH LAYER AND METHODS FOR MAKING THEREOF
20210407850 · 2021-12-30 ·

A silicon-on-insulator substrate includes: (1) a high-resistivity base layer including silicon and a trap-rich region including arsenic diffused within a first side of the high-resistivity base layer, wherein the trap-rich region has a thickness that is in a range of 1 to 10 microns and a trap density that is in a range of 0.8*10.sup.10 cm.sup.2 eV.sup.−1 to 1.2*10.sup.10 cm.sup.2 eV.sup.−1, wherein the high-resistivity base layer has resistivity in a range of 50 to 100 ohm-meters and a thickness in a range of 500 to 700 microns; (2) a silicon dioxide layer positioned on the first side of the high-resistivity base layer and having a thickness that is in a range of 1000 to 5000 angstroms; and (3) a transfer layer positioned on the silicon dioxide layer, wherein the transfer layer comprises a silicon wafer having a thickness that is a range of 500 to 5000 angstroms.

Method of manufacturing semiconductor device

A method of manufacturing a semiconductor device includes forming a photoresist defining an opening on an upper surface of a semiconductor wafer; and forming an electrode in the opening using a plating technique, in which the step of forming the electrode includes forming a first plated layer at a first current density such that the first plated layer has a first thickness, and forming a second plated layer on an upper surface of the first plated layer at a second current density higher than the first current density such that the second plated layer has a second thickness greater than the first thickness.

Silicon-on-insulator substrate including trap-rich layer and methods for making thereof
11145537 · 2021-10-12 · ·

A silicon-on-insulator substrate includes: (1) a high-resistivity base layer including silicon and a trap-rich region including arsenic diffused within a first side of the high-resistivity base layer, wherein the trap-rich region has a thickness that is in a range of 1 to 10 microns and a trap density that is in a range of 0.8*10.sup.10 cm.sup.2 eV.sup.−1 to 1.2*10.sup.10 cm.sup.2 eV.sup.−1, wherein the high-resistivity base layer has resistivity in a range of 50 to 100 ohm-meters and a thickness in a range of 500 to 700 microns; (2) a silicon dioxide layer positioned on the first side of the high-resistivity base layer and having a thickness that is in a range of 1000 to 5000 angstroms; and (3) a transfer layer positioned on the silicon dioxide layer, wherein the transfer layer comprises a silicon wafer having a thickness that is a range of 500 to 5000 angstroms.

SUBSTRATE PROCESSING DEVICE AND METHOD OF MANUFACTURING SUBSTRATE PROCESSING DEVICE
20210287916 · 2021-09-16 ·

A substrate processing device is provided. The substrate processing device includes a processing container including a mounting table, a refrigeration device disposed to have a gap between the mounting table and the refrigeration device, a first elevating device configured to raise or lower the refrigeration device, a refrigerant flow path to supply a refrigerant to the gap, a compression device configured to compress the refrigerant supplied to the refrigerant flow path, and refrigerant transfer pipes connected to both a first connection-fixing unit which is a flow path port of the refrigerant flow path and a second connection-fixing unit fluid-communicating with the compression device. Further, each of the refrigeration transfer pipes extends such that at least a portion of the refrigerant transfer pipe is curved between the first and second connection-fixing units, and each of the refrigerant transfer pipes is placed on a support member at the second connection-fixing unit.

SUBSTRATE PROCESSING DEVICE AND METHOD OF MANUFACTURING SUBSTRATE PROCESSING DEVICE
20210287916 · 2021-09-16 ·

A substrate processing device is provided. The substrate processing device includes a processing container including a mounting table, a refrigeration device disposed to have a gap between the mounting table and the refrigeration device, a first elevating device configured to raise or lower the refrigeration device, a refrigerant flow path to supply a refrigerant to the gap, a compression device configured to compress the refrigerant supplied to the refrigerant flow path, and refrigerant transfer pipes connected to both a first connection-fixing unit which is a flow path port of the refrigerant flow path and a second connection-fixing unit fluid-communicating with the compression device. Further, each of the refrigeration transfer pipes extends such that at least a portion of the refrigerant transfer pipe is curved between the first and second connection-fixing units, and each of the refrigerant transfer pipes is placed on a support member at the second connection-fixing unit.

SILICON-ON-INSULATOR SUBSTRATE INCLUDING TRAP-RICH LAYER AND METHODS FOR MAKING THEREOF
20210104430 · 2021-04-08 ·

A silicon-on-insulator substrate includes: (1) a high-resistivity base layer including silicon and a trap-rich region including arsenic diffused within a first side of the high-resistivity base layer, wherein the trap-rich region has a thickness that is in a range of 1 to 10 microns and a trap density that is in a range of 0.8*10.sup.10 cm.sup.2 eV.sup.−1 to 1.2*10.sup.10 cm.sup.2 eV.sup.−1, wherein the high-resistivity base layer has resistivity in a range of 50 to 100 ohm-meters and a thickness in a range of 500 to 700 microns; (2) a silicon dioxide layer positioned on the first side of the high-resistivity base layer and having a thickness that is in a range of 1000 to 5000 angstroms; and (3) a transfer layer positioned on the silicon dioxide layer, wherein the transfer layer comprises a silicon wafer having a thickness that is a range of 500 to 5000 angstroms.

Heat treatment method for dopant introduction

Hydrogen annealing for heating a semiconductor wafer on which a thin film containing a dopant is deposited to an annealing temperature under an atmosphere containing hydrogen is performed. A native oxide film is inevitably formed between the thin film containing the dopant and the semiconductor wafer, however, by performing hydrogen annealing, the dopant atoms diffuse relatively easily in the native oxide film and accumulate at the interface between the front surface of the semiconductor wafer and the native oxide film. Subsequently, the semiconductor wafer is preheated to a preheating temperature under a nitrogen atmosphere, and then, flash heating treatment in which the front surface of the semiconductor wafer is heated to a peak temperature for less than one second is performed. The dopant atoms are diffused and activated in a shallow manner from the front surface of the semiconductor wafer, thus, the low-resistance and extremely shallow junction is obtained.

Heat treatment method for dopant introduction

Hydrogen annealing for heating a semiconductor wafer on which a thin film containing a dopant is deposited to an annealing temperature under an atmosphere containing hydrogen is performed. A native oxide film is inevitably formed between the thin film containing the dopant and the semiconductor wafer, however, by performing hydrogen annealing, the dopant atoms diffuse relatively easily in the native oxide film and accumulate at the interface between the front surface of the semiconductor wafer and the native oxide film. Subsequently, the semiconductor wafer is preheated to a preheating temperature under a nitrogen atmosphere, and then, flash heating treatment in which the front surface of the semiconductor wafer is heated to a peak temperature for less than one second is performed. The dopant atoms are diffused and activated in a shallow manner from the front surface of the semiconductor wafer, thus, the low-resistance and extremely shallow junction is obtained.