Suppose the hole concentration in silicon sampleis described mathematically by p(x) = 105+1019 exp(− x/ Lp) holes/cm3, x ≥ 0 in which Lp is known as the diffusion length for holes and is equal to 2.0 μm. Find the diffusion current density for holes as a function of distance for x ≥ 0 if Dp = 15 cm2/s. What is the diffusion current at x = 0 if the cross-sectional area is 10 μm2?

Suppose the hole concentration in silicon sampleis described mathematically by p(x) = 105+1019 exp(− x/ Lp) holes/cm3, x ≥ 0 in which Lp is known as the diffusion length for holes and is equal to 2.0 μm. Find the diffusion current density for holes as a function of distance for x ≥ 0 if Dp = 15 cm2/s. What is the diffusion current at x = 0 if the cross-sectional area is 10 μm2?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter1: Atomic Structure

Section: Chapter Questions

Problem 6RQ: How many valence electrons are generally contained in materials used for insulators?

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