- #1
Sceptile
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Heres the question:
A sample of pure silicon, which has four valence electrons is doped with gallium, which has three valence electrons, to give a concentration of 10^23 m^-3.
a. Is the material n-type or p-type?
b. If the electron mobility is 0.14 m^2/Vs and the hole mobility is 0.05 m^2/Vs, what is the conductivity?
I know this is a p-type, just want to make sure. And the equation for conductivity is conductivity = (number denisty)*(electron charge)*(mobility), but I don't know how to incorporate electron and hole mobility into this.
An explanation and working out on how you solve this question especially part b) would really be helpful. Thanks.
A sample of pure silicon, which has four valence electrons is doped with gallium, which has three valence electrons, to give a concentration of 10^23 m^-3.
a. Is the material n-type or p-type?
b. If the electron mobility is 0.14 m^2/Vs and the hole mobility is 0.05 m^2/Vs, what is the conductivity?
I know this is a p-type, just want to make sure. And the equation for conductivity is conductivity = (number denisty)*(electron charge)*(mobility), but I don't know how to incorporate electron and hole mobility into this.
An explanation and working out on how you solve this question especially part b) would really be helpful. Thanks.