Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
2 GaAs at T-300K is uniformly doped with donor impurity atoms to a concentration of N, 2 x 10" cm. Assume an excess carrier lifetime of 5 x 10"s. 10 a) Determine the excess electron-hole recombination rate if the excess hole concentration is õp- S x 10" cm'. b) What is the lifetime of electrons? c) Determine the thermal equilibrium recombination rate of holes.

2 GaAs at T-300K is uniformly doped with donor impurity atoms to a concentration of N, 2 x 10" cm. Assume an excess carrier lifetime of 5 x 10"s. 10 a) Determine the excess electron-hole recombination rate if the excess hole concentration is õp- S x 10" cm'. b) What is the lifetime of electrons? c) Determine the thermal equilibrium recombination rate of holes.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
See similar textbooks
icon
Related questions
Question
Solve a , b and c . In the solution provided before as attached only a and b are solved .
2 GaAs at T=300K is uniformly doped with donor impurity atoms to a concentration of Ng = 2 10 x 106 cm. Assume an excess carrier lifetime of 5 x 10" s. a) Determine the excess electron-hole recombination rate if the excess hole concentration is õp= 5 x 10" cm, b) What is the lifetime of electrons? c) Determine the thermal equilibrium recombination rate of holes.
Transcribed Image Text:2 GaAs at T=300K is uniformly doped with donor impurity atoms to a concentration of Ng = 2 10 x 106 cm. Assume an excess carrier lifetime of 5 x 10" s. a) Determine the excess electron-hole recombination rate if the excess hole concentration is õp= 5 x 10" cm, b) What is the lifetime of electrons? c) Determine the thermal equilibrium recombination rate of holes.
7:56 (а) Equation for electron hole recombination rate in terms of excess electron concentration and excess carrier lifetime is R = Here Sn(1) is excess electron concentration, R is electron hole recombination rate and r is excess carrier lifetime. Substitute 5x10" cm' for Sn and 5x10 s for r R_ =- (5x10“ cm) (5x10" s) = 10" cm's Therefore electron hole recombination rate is R = 10" cm's" Step2 b) (b) In semiconductor "Po = n} P. Here n, and P, are the thermal-equilibrium concentrations of electrons and holes. Again P. = N. = 2x10" cm Now n,= P. Substitute 1,8 x 10° cm for n, and 2x10" cm"for Po. P. (1.8×10* cm") (2x10" cm") =1.62 x10 cm Recombination rates are equal for both electrons and holes Therefore - P. PaxT II
Transcribed Image Text:7:56 (а) Equation for electron hole recombination rate in terms of excess electron concentration and excess carrier lifetime is R = Here Sn(1) is excess electron concentration, R is electron hole recombination rate and r is excess carrier lifetime. Substitute 5x10" cm' for Sn and 5x10 s for r R_ =- (5x10“ cm) (5x10" s) = 10" cm's Therefore electron hole recombination rate is R = 10" cm's" Step2 b) (b) In semiconductor "Po = n} P. Here n, and P, are the thermal-equilibrium concentrations of electrons and holes. Again P. = N. = 2x10" cm Now n,= P. Substitute 1,8 x 10° cm for n, and 2x10" cm"for Po. P. (1.8×10* cm") (2x10" cm") =1.62 x10 cm Recombination rates are equal for both electrons and holes Therefore - P. PaxT II
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 33 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Flyback and Push-Pull Converter
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS