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Question 4: (8 Marks) Compute the atomic packing factor for the diamond cubic crystal structure (figure below). Assume that bonding atoms touch one another, that the angle between adjacent bonds is 109.5°, and that each atom internal to the unit cell is positioned a/4 of the distance away from the two nearest cell faces (a is the unit cell edge length). Q 00 Question 1: (2 Marks) For the given electron state quantum number configurations, fill in all possible values for the empty cells. n mt ms 5 3 +3 1 0 +1/2 2 -1 +1/2 2 -1 -1/2 Question 2: (2 Marks) What neutral atoms have the following electron configurations? Electron Configuration 1s22s22p63s23p64s²3d³ 1s22s22p 1s22s22p63s23p64s²3d¹º4p65s¹ 10 1s22s22 Neutral Atom ²3d¹º4p65s²4d¹º5p5 Question 3: (8 Marks) Silicon has electron and hole mobilities of 1200 and 420 cm²/Vs, respectively. With this in mind: (a) (2 marks) With 1002 cm³ electrons excited into the conduction band, what is the conductivity of silicon? (b) (2 marks) If silicon is doped with phosphorus, is the resulting semiconductor p-type or n-type? Justify your answer. (c) (2 marks) Considering the doping described previously, sketch the band diagram of this material before and after doping. (d) (2 marks) Considering a phosphorus concentration of 1008 cm³, what is the new conductivity of the material?

Question 4: (8 Marks) Compute the atomic packing factor for the diamond cubic crystal structure (figure below). Assume that bonding atoms touch one another, that the angle between adjacent bonds is 109.5°, and that each atom internal to the unit cell is positioned a/4 of the distance away from the two nearest cell faces (a is the unit cell edge length). Q 00 Question 1: (2 Marks) For the given electron state quantum number configurations, fill in all possible values for the empty cells. n mt ms 5 3 +3 1 0 +1/2 2 -1 +1/2 2 -1 -1/2 Question 2: (2 Marks) What neutral atoms have the following electron configurations? Electron Configuration 1s22s22p63s23p64s²3d³ 1s22s22p 1s22s22p63s23p64s²3d¹º4p65s¹ 10 1s22s22 Neutral Atom ²3d¹º4p65s²4d¹º5p5 Question 3: (8 Marks) Silicon has electron and hole mobilities of 1200 and 420 cm²/Vs, respectively. With this in mind: (a) (2 marks) With 1002 cm³ electrons excited into the conduction band, what is the conductivity of silicon? (b) (2 marks) If silicon is doped with phosphorus, is the resulting semiconductor p-type or n-type? Justify your answer. (c) (2 marks) Considering the doping described previously, sketch the band diagram of this material before and after doping. (d) (2 marks) Considering a phosphorus concentration of 1008 cm³, what is the new conductivity of the material?

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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Question 4: (8 Marks) Compute the atomic packing factor for the diamond cubic crystal structure (figure below). Assume that bonding atoms touch one another, that the angle between adjacent bonds is 109.5°, and that each atom internal to the unit cell is positioned a/4 of the distance away from the two nearest cell faces (a is the unit cell edge length). Q 00
Transcribed Image Text:Question 4: (8 Marks) Compute the atomic packing factor for the diamond cubic crystal structure (figure below). Assume that bonding atoms touch one another, that the angle between adjacent bonds is 109.5°, and that each atom internal to the unit cell is positioned a/4 of the distance away from the two nearest cell faces (a is the unit cell edge length). Q 00
Question 1: (2 Marks) For the given electron state quantum number configurations, fill in all possible values for the empty cells. n mt ms 5 3 +3 1 0 +1/2 2 -1 +1/2 2 -1 -1/2 Question 2: (2 Marks) What neutral atoms have the following electron configurations? Electron Configuration 1s22s22p63s23p64s²3d³ 1s22s22p 1s22s22p63s23p64s²3d¹º4p65s¹ 10 1s22s22 Neutral Atom ²3d¹º4p65s²4d¹º5p5 Question 3: (8 Marks) Silicon has electron and hole mobilities of 1200 and 420 cm²/Vs, respectively. With this in mind: (a) (2 marks) With 1002 cm³ electrons excited into the conduction band, what is the conductivity of silicon? (b) (2 marks) If silicon is doped with phosphorus, is the resulting semiconductor p-type or n-type? Justify your answer. (c) (2 marks) Considering the doping described previously, sketch the band diagram of this material before and after doping. (d) (2 marks) Considering a phosphorus concentration of 1008 cm³, what is the new conductivity of the material?
Transcribed Image Text:Question 1: (2 Marks) For the given electron state quantum number configurations, fill in all possible values for the empty cells. n mt ms 5 3 +3 1 0 +1/2 2 -1 +1/2 2 -1 -1/2 Question 2: (2 Marks) What neutral atoms have the following electron configurations? Electron Configuration 1s22s22p63s23p64s²3d³ 1s22s22p 1s22s22p63s23p64s²3d¹º4p65s¹ 10 1s22s22 Neutral Atom ²3d¹º4p65s²4d¹º5p5 Question 3: (8 Marks) Silicon has electron and hole mobilities of 1200 and 420 cm²/Vs, respectively. With this in mind: (a) (2 marks) With 1002 cm³ electrons excited into the conduction band, what is the conductivity of silicon? (b) (2 marks) If silicon is doped with phosphorus, is the resulting semiconductor p-type or n-type? Justify your answer. (c) (2 marks) Considering the doping described previously, sketch the band diagram of this material before and after doping. (d) (2 marks) Considering a phosphorus concentration of 1008 cm³, what is the new conductivity of the material?
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