Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method for reducing extrinsic base resistance and improving manufacturability in an NPN transistor










Image Number 6 for United States Patent #6830982.

According to one exemplary embodiment, an NPN bipolar transistor comprises a base layer situated over a collector, where the base layer comprises an intrinsic base region and an extrinsic base region. The NPN bipolar transistor may be, for example, an NPN silicon-germanium heterojunction bipolar transistor. The base layer can be, for example, silicon-germanium. According to this exemplary embodiment, the NPN bipolar transistor further comprises a cap layer situated over the base layer, where a portion of the cap layer is situated over the extrinsic base region, and where the portion of the cap layer situated over the extrinsic base region comprises an indium dopant. The cap layer may be, for example, polycrystalline silicon. According to this exemplary embodiment, the NPN bipolar transistor may further comprise an emitter situated over the intrinsic base region. The emitter may be, for example, polycrystalline silicon.








 
 
  Recently Added Patents
Magnetoresistive element and manufacturing method of the same
Organic dual-gate memory and method for producing same
Rules-based approach to transferring and/or viewing medical images
Integrated circuit packaging system with heat slug and method of manufacture thereof
Flexible quantization
System and method for employing signoff-quality timing analysis information concurrently in multiple scenarios to reduce dynamic power in an electronic circuit and an apparatus incorporating t
Pyridyldiamido transition metal complexes, production and use thereof
  Randomly Featured Patents
Continuously variable transmission having a continuously slipping clutch
Method for controlling a handheld computer by entering commands onto a displayed feature of the handheld computer
Apparatus and methods for sculpting carpet
Received signal decision apparatus for digital modulated signal receiver
Fish feeding system
Fuel control system for dryer
Throttle lever device
Spectrophotometer and subassemblies thereof
Combustion control of internal combustion engine
Pharmaceutical compositions containing beta-lapachone, or derivatives or analogs thereof, and methods of using same