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- W2072996653 abstract "The cutoff frequency performance of an NPN Si/SiGe/SiGe single-heterojunction bipolartransistor (SiGe SHBT) at high collector current densities has been analysed using a 2-D MEDICIdevice simulator. A conventional NPN Si/SiGe/Si double-heterojunction bipolar transistor(SiGe DHBT) having uniform 20 atomic per cent of germanium in the base region has beeninvestigated for comparison. The analysis shows the formation of a retarding potential barrierfor minority carrier electrons at the base-collector heterojunction of the DHBT structure. Whereas,the base-collector homojunction of the SiGe SHBT structure, having a uniform 15 atomic percent of germanium profile in its base and collector, inhibits the formation of such a retardingpotential barrier, the SHBT structure with a base-collector homojunction shows an improvedcutoff frequency at high collector current density in comparison with conventional SiGe DHBT,which makes it more promising for high speed, scaled down, field-specific applications." @default.
- W2072996653 created "2016-06-24" @default.
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- W2072996653 date "2006-04-24" @default.
- W2072996653 modified "2023-09-25" @default.
- W2072996653 title "Silicon-germanium Single-heterojunction Bipolar Transistor" @default.
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- W2072996653 doi "https://doi.org/10.14429/dsj.56.1891" @default.
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