Electrical Engineering Question
Assignment-4 QUASI-EQUILIBRIUM CARRIER CONCENTRATIONS Started: Mar 10 at 3:17pm Quiz Instructions Please: 1. Show Your Work: For each problem, show all the steps involved in your calculations. This includes equations used, substitutions made, and the final answer. 2. Include Units: Make sure to include units for all quantities (e.g., meters, seconds, etc.) in your calculations. 3. Be Neat: Present your work clearly. Question 1 1 pts For all the following five problems (1,2,3,4, and 5) Assume p-type silicon at room temperature, uniformly doped with NA = 1017 cm-3,τ = 8*10−6 s. Assume Nv = 1.84×1019 cm-3 and Nc = 2.8×1019 cm-3 .The sample is uniformly illuminated with light, resulting in an optical generation rate R = 1020 cm-3 sec-1. 1-Find the equilibrium electron concentrations. Edit 12pt View Insert Paragraph Format Tools Table p 0 words 0 words Question 2 1 pts 2- Find the steady-state excess concentration Δn. Edit 12pt View Insert Format Tools Table Paragraph p Question 3 1 pts 3-Find EFv – Ev at equilibrium before injection. Edit 12pt View Insert Paragraph Format Tools Table p 0 words 0 words Question 4 1 pts 4-Calculate the concentrations of electrons and holes after injection. Edit 12pt p View Insert Format Tools Table Paragraph Question 5 1 pts 5-Find the quasi-fermi levels when the excess carriers are injected. Edit 12pt p View Insert Format Tools Table Paragraph 0 words Quiz saved at 3:17pm Submit Quiz
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