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
Organic polymer particles and process for producing the same, magnetic particles for diagnostics, carboxyl group-containing particles and process for producing the same, and probe-bound partic
Wireless transmission device
Device for optically scanning and measuring an environment
Passive wireless gastroesophageal sensor
Substrate having a mark formed on a surface thereof by a CO.sub.2 laser beam
Methods and apparatus for timing synchronization for peer to peer devices operating in WWAN spectrum
Data writing method for non-volatile memory, and controller and storage system using the same
  Randomly Featured Patents
Data recovery technique which avoids a false convergence state
Skimming apparatus
Construction block
Dross processing system
Plant transcription factors
Salt chlorine generator
Side airbag
Single mode operation of microelectromechanically tunable, half-symmetric, vertical cavity surface emitting lasers
Food slicer
Code transmitting apparatus with limited carry propagation