4. Boron dopant atoms have been added to a silicon sample. Arsenic is a group V element. a. Is this material n-type or p-type? Why? b. Using the information given in the plot below, answer the following: i. What is the Boron concentration for this sample? ii. What is the approximate value of the carrier concentration at 200K? State all assumptions and approximations. What is the approximate electrical conductivity of this material at 200 K, assuming electron and hole mobilities of 4000 and 600 cm²/V-s, respectively. Indicate any data points you use onto the plot (label), and state all assumptions. ii. Temperature ("C) -200 -100 100 200 300 1.2 x 1020 1х 1020 Intrinsic region 8x 109 6х 101° Freeze-out region - Extrinsic region 4 x 1019 2x 10 100 200 300 400 500 600 Temperature (K) Carrier concentration (cm)

4. Boron dopant atoms have been added to a silicon sample. Arsenic is a group V element. a. Is this material n-type or p-type? Why? b. Using the information given in the plot below, answer the following: i. What is the Boron concentration for this sample? ii. What is the approximate value of the carrier concentration at 200K? State all assumptions and approximations. What is the approximate electrical conductivity of this material at 200 K, assuming electron and hole mobilities of 4000 and 600 cm²/V-s, respectively. Indicate any data points you use onto the plot (label), and state all assumptions. ii. Temperature ("C) -200 -100 100 200 300 1.2 x 1020 1х 1020 Intrinsic region 8x 109 6х 101° Freeze-out region - Extrinsic region 4 x 1019 2x 10 100 200 300 400 500 600 Temperature (K) Carrier concentration (cm)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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