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What is the diffusion length for holes when Dp=25cm^2/s and τp=25s?

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What is the diffusion length for holes when Dp=25cm^2/s and τp=25s?

(a) 25cm

(b) 1cm

(c) 0.04cm

(d) 50cm

I have been asked this question in an interview for internship.

The question is from The Continuity Equation topic in division Conduction in Semiconductors of Electronic Devices & Circuits

1 Answer

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Best answer
Right choice is (a) 25cm

The best explanation: Lp=√(Dp*τp)

=√(25*25)

=25cm.

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