摘要:
A field effect transistor and method of fabricating the field effect transistor. The field effect transistor, including: a gate electrode formed on a top surface of a gate dielectric layer, the gate dielectric layer on a top surface of a single-crystal silicon channel region, the single-crystal silicon channel region on a top surface of a Ge including layer, the Ge including layer on a top surface of a single-crystal silicon substrate, the Ge including layer between a first dielectric layer and a second dielectric layer on the top surface of the single-crystal silicon substrate.
摘要:
A field effect transistor and method of fabricating the field effect transistor. The field effect transistor, including: a gate electrode formed on a top surface of a gate dielectric layer, the gate dielectric layer on a top surface of a single-crystal silicon channel region, the single-crystal silicon channel region on a top surface of a Ge including layer, the Ge including layer on a top surface of a single-crystal silicon substrate, the Ge including layer between a first dielectric layer and a second dielectric layer on the top surface of the single-crystal silicon substrate.
摘要:
A structure comprises a single wafer with a first subcollector formed in a first region having a first thickness and a second subcollector formed in a second region having a second thickness, different from the first thickness. A method is also contemplated which includes providing a substrate including a first layer and forming a first doped region in the first layer. The method further includes forming a second layer on the first layer and forming a second doped region in the second layer. The second doped region is formed at a different depth than the first doped region. The method also includes forming a first reachthrough in the first layer and forming a second reachthrough in second layer to link the first reachthrough to the surface.
摘要:
A structure comprises a single wafer with a first subcollector formed in a first region having a first thickness and a second subcollector formed in a second region having a second thickness, different from the first thickness. A method is also contemplated which includes providing a substrate including a first layer and forming a first doped region in the first layer. The method further includes forming a second layer on the first layer and forming a second doped region in the second layer. The second doped region is formed at a different depth than the first doped region. The method also includes forming a first reachthrough in the first layer and forming a second reachthrough in second layer to link the first reachthrough to the surface.
摘要:
Techniques for reducing or eliminating effects of noise on a wireless communication system are provided. In one aspect of the invention, the technique comprises monitoring noise attributable to an interference source that may affect one or more components of the wireless communication system. The interference source being monitored is distant from the wireless communication system to the degree that noise arrives at the wireless communication system within a substantially point source-like angular range. For example, the noise may be attributable to the sun or tropospheric ducting. The technique then comprises initiating one or more operations, as a function of the monitored noise, to reduce or eliminate the effects of the noise attributable to the distant interference source at one or more of the components of the wireless communication system that are determined to be affected by such noise.
摘要:
Methods of manufacturing a semiconductor structure are disclosed including a deep trench isolation in which a channel stop is formed in the form of an embedded impurity region in the substrate prior to the deep trench etch and formation of transistor devices (FEOL processing) on the substrate. In this fashion, the FEOL processing thermal cycles can activate the impurity region. The deep trench isolations are then formed after FEOL processing. The method achieves the reduced cost of forming deep trench isolations after FEOL processing, and allows the practice of sharing of a collector level between devices to continue. The invention also includes the semiconductor structure so formed.
摘要:
Structure and method of structure in which a contact, e.g., low resistance; ohmic; resulting in Schottky isolation, is coupled to a doped region that is buried in a substrate. In a bipolar transistor having a collector region formed below an upper surface of a substrate, a trench is formed through a portion of the collector region, and the sidewall(s) and/or bottom of the trench are doped, e.g., by ion implantation or dopant. The trench is filled with a conductor, e.g., a refractory metal such as tungsten.
摘要:
Methods are disclosed for forming a varied impurity profile for a collector using scattered ions while simultaneously forming a subcollector. In one embodiment, the invention includes: providing a substrate; forming a mask layer on the substrate including a first opening having a first dimension; and substantially simultaneously forming through the first opening a first impurity region at a first depth in the substrate (subcollector) and a second impurity region at a second depth different than the first depth in the substrate. The breakdown voltage of a device can be controlled by the size of the first dimension, i.e., the distance of first opening to an active region of the device. Numerous different sized openings can be used to provide devices with different breakdown voltages using a single mask and single implant. A semiconductor device is also disclosed.
摘要:
A semiconductor device and a method of fabricating a semiconductor device having multiple subcollectors which are formed in a common wafer, in order to provide multiple structures having different characteristic and frequency response are provided. The subcollectors may be provided using different doses or different material implants resulting in devices having different optimum unity current gain cutoff frequency (fT) and breakdown voltage (BVCEO and BVCBO) on a common wafer.
摘要:
A silicon germanium heterojunction bipolar transistor device and method comprises a semiconductor region, and a diffusion region in the semiconductor region, wherein the diffusion region is boron-doped, wherein the semiconductor region comprises a carbon dopant therein to minimize boron diffusion, and wherein a combination of an amount of the dopant, an amount of the boron, and a size of the semiconductor region are such that the diffusion region has a sheet resistance of less than approximately 4 Kohms/cm2. Also, the diffusion region is boron-doped at a concentration of 1×1020/cm3 to 1×1021/cm3. Additionally, the semiconductor region comprises 5-25% germanium and 0-3% carbon. By adding carbon to the semiconductor region, the device achieves an electrostatic discharge robustness, which further causes a tighter distribution of a power-to-failure of the device, and increases a critical thickness and reduces the thermal strain of the semiconductor region.
摘要翻译:硅锗异质结双极晶体管器件和方法包括半导体区域和半导体区域中的扩散区域,其中扩散区域是硼掺杂的,其中半导体区域包括其中的碳掺杂剂以最小化硼扩散,并且其中组合 的掺杂剂的量,硼的量和半导体区域的尺寸使得扩散区域具有小于约4Kohms / cm 2的薄层电阻。 此外,扩散区域以1×10 20 / cm 3至1×10 21 / cm 3的浓度进行硼掺杂。 另外,半导体区域包括5-25%的锗和0-3%的碳。 通过向半导体区域添加碳,该器件实现了静电放电鲁棒性,这进一步导致器件的功率故障分布更严格,并且增加了临界厚度并降低了半导体区域的热应变。