contact.vincent
Newbie level 4
I'm totally new to this semiconductors. I have read a few books but when i am trying to solve the problem, i cannot understand which equations should i use. Pls tell me the equations/ final answers to these questions. Thanks
Silicon atoms are added to a piece of gallium arsenic (GaAs). The Si can replace either trivalent Ga or pentavalent As atoms. Assume that Si atoms act as fully ionized dopant atoms and that 5% of the 10^10cm-3 Si atoms added replace Ga and 95% replace As atoms. The sample temperature is 300K.
1) Calculate the donor and acceptor concentrations.
2) Find the electron and hole concentrations and the location of the Fermi level.
3) Find the conductivity of the GaAs assuming the lattice scattering dominant.
Silicon atoms are added to a piece of gallium arsenic (GaAs). The Si can replace either trivalent Ga or pentavalent As atoms. Assume that Si atoms act as fully ionized dopant atoms and that 5% of the 10^10cm-3 Si atoms added replace Ga and 95% replace As atoms. The sample temperature is 300K.
1) Calculate the donor and acceptor concentrations.
2) Find the electron and hole concentrations and the location of the Fermi level.
3) Find the conductivity of the GaAs assuming the lattice scattering dominant.