Intrinsic carrier density

  • #1

Summary:

Is there a rule of thumb that once a semiconductor's intrinsic carrier density reaches 10^15 cm^-3, that the semiconductor cannot effectively be used to perform useful operations?
Is there a rule of thumb that once a semiconductor's intrinsic carrier density reaches 10^15 cm^-3, that the semiconductor cannot effectively be used to perform useful operations?
 

Answers and Replies

  • #2
494
197
Summary: Is there a rule of thumb that once a semiconductor's intrinsic carrier density reaches 10^15 cm^-3, that the semiconductor cannot effectively be used to perform useful operations?

Is there a rule of thumb that once a semiconductor's intrinsic carrier density reaches 10^15 cm^-3, that the semiconductor cannot effectively be used to perform useful operations?
Never heard of such rule. Germanium intrinsic concentration is 2*10^13 cm^-3, and nowadays even this value is considered too high for applications.
 
  • #3
Never heard of such rule. Germanium intrinsic concentration is 2*10^13 cm^-3, and nowadays even this value is considered too high for applications.
is the 2*10^13 cm^-3 number empirical? or is there a theoretical proof that could be stepped through to determine this value?
 
  • #4
494
197
is the 2*10^13 cm^-3 number empirical? or is there a theoretical proof that could be stepped through to determine this value?
Empirical.
 
  • #7
it's not clear where the reference discusses how the intrinsic mobility is considered too high for applications?
 

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