posted by Alan on .
N-type silicon (Si) has been produced by doping with phosphorus (P). The charge-carrier population based on electrical conductivity measurments is determined to be 3.091*10^17 carriers/cm3 at room temperature.
1. Calculate the doping level of P (how much P has been added to the Si). Express your answer in units of g P / kg Si.
2. What is the majority charge carrier in the material described above?
For 2, ans is electrons of course.
For 1= 3.091*10^17/Na*30.91= 1.59*10^41 convert in gP so may be 1.53*10^-5 gP. cant calculate further i am confused. till this it is just perfect
Ya got it, answer is i think 6.82*10^-3
6.82*10^-3 is right
currect answer is 6.82e-3