ECE3901_HW2

ECE3901_HW2 - EE3901 Semiconductor Devices A2000 ECE3901...

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EE3901 Semiconductor Devices A2000 ECE3901 Semiconductor Devices A2005 Homework Assignment #2 Due: Friday, September 9, 2005 (at the beginning of class). Be sure your ECE mailbox number is visible on the front of your problem set! R.F. Pierret, Semiconductor Device Fundamentals 1) 3.1 (a-h) 2) 3.2 (a-e) 3) 3.6 4) 3.12 5) 3.16 See next pages for problems 6-8 1
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EE3901 Semiconductor Devices A2000 6) [Resistor design] This problem involves the design of a resistor fabricated out of p-type material which is uniformly doped with N A = 1.0E+14 acceptor/cm 3 . The resistor material has a width of 0.1cm and a thickness of 0.03cm. a) Determine the length L for a resistor value of R = 100k at T=300K. b) If temperature increases to T=350K, will the value of resistance increase, decrease, or remain the same? Explain. c) Due to variation in the manufacturing process, the thickness can actually range from 0.026cm to 0.034 cm. Given your L from part (a), what are the maximum and minimum values of resistance due to variations in thickness?
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ECE3901_HW2 - EE3901 Semiconductor Devices A2000 ECE3901...

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