20085ee2_1_ps7

20085ee2_1_ps7 - Problem set 7 solutions Q1 1015 kT N a...

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Problem set 7 solutions Q1 (a) 288 . 0 10 10 ln 025 . 0 ln 10 15 i a p n N q kT V (b) 4 . 0 10 10 9 ln 025 . 0 ln 10 9 10 16 16 i D n D n N q kT N V Q2 n i at 300k is 1×10 10 cm -3 . Find n i at 100k first. 6 100 / 300 2 / 3 2 / 3 2 10 100 _ 2 / 3 2 10 429 ) 300 100 ( ) 300 100 ( ) 10 ( , , e n T N N e N N n i v c kT Eg v c i cm -3 . (a) 122 . 0 10 429 10 ln 300 100 025 . 0 6 15 p V (b) 159 . 0 10 429 10 9 ln 300 100 025 . 0 6 16 n V Q3 713 . 0 ln ln , 10 , 10 6 , 10 4 3 10 3 16 3 15 i
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20085ee2_1_ps7 - Problem set 7 solutions Q1 1015 kT N a...

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