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bapefer498
04.04.2020 •
Physics
2. An N-type sample of silicon has uniform density (Nd = 1019/cm–3 ) of arsenic, and a P-type silicon sample has a uniform density (Na = 1015 /cm–3 ) of boron. For each sample, determine the following: (a) The temperature at which the intrinsic concentration ni exceeds the impurity density by factor of 10.
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Ответ:
The temperature at which the intrinsic concentration exceeds the impurity density by factor of 10 is 636 K.
Explanation:
The given data is as follows.
As we are given that
exceeds impurity density by a factor of 10.
Therefore,![n_{i} = 10N_{d}](/tpl/images/0581/9674/77f8a.png)
T = 1985 K
Also,![n_{i} = 10N_{d}](/tpl/images/0581/9674/77f8a.png)
T = 636 K
Thus, we can conclude that the temperature at which the intrinsic concentration exceeds the impurity density by factor of 10 is 636 K.
Ответ: