ECE%203080%20Old%20Final%20Exam%20Solutions

ECE%203080%20Old%20Final%20Exam%20Solutions - ECE 3080...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
ECE 3080 Semiconductor Devices Spring 2008 Dr. Klein Final Exam Instructions: (1) Closed book, closed notes. You are only permitted a calculator and a writing instrument. (2) Show all work to receive full credit. Proctor will provide additional paper on request. (3) Each problem is worth the number of points indicated. (4) Circle, box, or otherwise indicate your final answer. (5) Answers must be legible. (6) Calculate numerical values where possible.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1. (10 points) Suppose an electron is described by the following wavefunction: ψ (x) = A e -2|x| (a) Find the constant A so that the total probability is normalized to 1. (b) Calculate the probability of finding the particle between x = 0 and x = 1.
Background image of page 2
2. (15 points) The band-edge diagram along the vertical (x) direction of a Si n- channel MOSFET at 300 K is described by: E C (x) = 1.02 eV, x < 0 cm E C (x) = 1.02 – (0.9e8)x 2 eV, 0 cm < x < 1e-4 cm E F (x) = 0 eV, for all x where x is in cm. This band edge diagram is sketched below. (a)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 8

ECE%203080%20Old%20Final%20Exam%20Solutions - ECE 3080...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online