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what is single side junction?

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llbaobao

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Sometimes I found in bipolar process, there are "single side junction".

But I do not know what is single side junction, Can anyone tell me ? or give me some link to explain this?

Thanks very much!
 

dick_freebird

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It may be talking about a junction with extremely
high doping ratio, like a base at 1E17 and emitter at
1E20 N/cm3; high ratios favor emitter injection
efficiency. And of course the emitter has only one
"side" junction-wise, but I don't think that's the point.
 

    llbaobao

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llbaobao

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thanks, i will go forward this issue.
 

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