Physics · Semiconductors
Which one of the following statements is not correct regarding carrier lifetime in semiconductors?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1τp is the time it takes the injected excess carrier concentration to fall to approximately 37% of its initial value.
- 2τn is the time it takes the total concentration to fall to approximately 63% of its initial value.✓
- 3On average, an injected hole (or electron) will exist for τp (or τn) seconds before recombination.
- 4Carrier lifetime ranges from nanoseconds to hundreds of microseconds.
Correct answer
τn is the time it takes the total concentration to fall to approximately 63% of its initial value.
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