- #1
jisbon
- 476
- 30
- Homework Statement
- The intrinsic carrier concentration of silicon at room temperature is ##1.43*10^{10}## per cubic centimeter
If boron atoms with the concentration of ##3*10^{17}##per cubic centimeter are added to the intrinsic Si, estimate the electron and hole concentration at room temperature.
- Relevant Equations
- Intrinsic: n=p=ni
Extrinisc: np=ni^2
Hi all,
So I'm confused how do I do this question when I add boron atoms. This is my take/attempt on this question though.
Since there are much more boron atoms per cubic centimeters as compared to the number of holes, can I assume that p = ##3*10^{17}## now, and simply find n by using np=ni^2 whereby n = ##(1.43*10^{10})^2 / 3*10^{17}## ?
Cheers
So I'm confused how do I do this question when I add boron atoms. This is my take/attempt on this question though.
Since there are much more boron atoms per cubic centimeters as compared to the number of holes, can I assume that p = ##3*10^{17}## now, and simply find n by using np=ni^2 whereby n = ##(1.43*10^{10})^2 / 3*10^{17}## ?
Cheers