ee606_s04_reviewproblem

ee606_s04_reviewproblem - Review Problem One of your...

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Review Problem One of your friends (who has not taken EE 606 ….) comes to you saying that he is trying to build a new transistor with a material called C 60 . He tells you that the material forms a FCC lattice with 60 carbon atoms at each Bravais lattice points. He has found the following figures and tables from a book in the library. He wants you to help him to (a) calculate intrinsic carrier concentration (n i ) of this material and (b) see what the conductivity of the material would be if he could dope the material with Nitrogen at the level of 1x10 18 cm -3 . Lattice Structure of C 60 material Material Properties of C 60
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Y-axis is energy in [eV]
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Outline of the solution: 1. Draw a band-diagram: no numbers yet, but put down E c , E v , E i =E F lines. 2. Next start by thinking about what you would need to know to compute intrinsic concentration n i (Ans: you will need to know bandgap Eg, and effective density of states N C , and N V ). 3.
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This note was uploaded on 12/12/2010 for the course ECE 606 taught by Professor Staff during the Spring '08 term at Purdue.

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ee606_s04_reviewproblem - Review Problem One of your...

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